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  27 <a name="boost_regex.ref.sub_match"></a><a class="link" href="sub_match.html" title="sub_match">sub_match</a>
  28 </h3></div></div></div>
  29 <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">regex</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
  30 </pre>
  31 <p>
  32         Regular expressions are different from many simple pattern-matching algorithms
  33         in that as well as finding an overall match they can also produce sub-expression
  34         matches: each sub-expression being delimited in the pattern by a pair of
  35         parenthesis (...). There has to be some method for reporting sub-expression
  36         matches back to the user: this is achieved this by defining a class <a class="link" href="match_results.html" title="match_results"><code class="computeroutput"><span class="identifier">match_results</span></code></a>
  37         that acts as an indexed collection of sub-expression matches, each sub-expression
  38         match being contained in an object of type <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a>.
  39       </p>
  40 <p>
  41         Objects of type <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a>
  42         may only be obtained by subscripting an object of type <a class="link" href="match_results.html" title="match_results"><code class="computeroutput"><span class="identifier">match_results</span></code></a>.
  43       </p>
  44 <p>
  45         Objects of type <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a>
  46         may be compared to objects of type <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span></code>,
  47         or <code class="computeroutput"><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span></code> or <code class="computeroutput"><span class="keyword">const</span>
  48         <span class="identifier">charT</span></code>.
  49       </p>
  50 <p>
  51         Objects of type <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a>
  52         may be added to objects of type <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span></code>,
  53         or <code class="computeroutput"><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span></code> or <code class="computeroutput"><span class="keyword">const</span>
  54         <span class="identifier">charT</span></code>, to produce a new <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span></code>
  55         object.
  56       </p>
  57 <p>
  58         When the marked sub-expression denoted by an object of type <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a> participated in a regular
  59         expression match then member <span class="emphasis"><em>matched</em></span> evaluates to <span class="emphasis"><em>true</em></span>,
  60         and members <span class="emphasis"><em>first</em></span> and <span class="emphasis"><em>second</em></span> denote
  61         the range of characters [first,second) which formed that match. Otherwise
  62         <span class="emphasis"><em>matched</em></span> is <span class="emphasis"><em>false</em></span>, and members
  63         <span class="emphasis"><em>first</em></span> and <span class="emphasis"><em>second</em></span> contained undefined
  64         values.
  65       </p>
  66 <p>
  67         When the marked sub-expression denoted by an object of type <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a> was repeated, then the
  68         <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a>
  69         object represents the match obtained by the <span class="emphasis"><em>last</em></span> repeat.
  70         The complete set of all the captures obtained for all the repeats, may be
  71         accessed via the captures() member function (Note: this has serious performance
  72         implications, you have to explicitly enable this feature).
  73       </p>
  74 <p>
  75         If an object of type <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a> represents sub-expression
  76         0 - that is to say the whole match - then member <span class="emphasis"><em>matched</em></span>
  77         is always <span class="emphasis"><em>true</em></span>, unless a <a class="link" href="../partial_matches.html" title="Partial Matches">partial
  78         match</a> was obtained as a result of the flag <code class="computeroutput"><span class="identifier">match_partial</span></code>
  79         being passed to a regular expression algorithm, in which case member <span class="emphasis"><em>matched</em></span>
  80         is <span class="emphasis"><em>false</em></span>, and members <span class="emphasis"><em>first</em></span> and
  81         <span class="emphasis"><em>second</em></span> represent the character range that formed the
  82         partial match.
  83       </p>
  84 <pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">{</span>
  85
  86 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
  87 <span class="keyword">class</span> <span class="identifier">sub_match</span><span class="special">;</span>
  88
  89 <span class="keyword">typedef</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="keyword">const</span> <span class="keyword">char</span><span class="special">*&gt;</span>                    <span class="identifier">csub_match</span><span class="special">;</span>
  90 <span class="keyword">typedef</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="keyword">const</span> <span class="keyword">wchar_t</span><span class="special">*&gt;</span>                 <span class="identifier">wcsub_match</span><span class="special">;</span>
  91 <span class="keyword">typedef</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">::</span><span class="identifier">const_iterator</span><span class="special">&gt;</span>    <span class="identifier">ssub_match</span><span class="special">;</span>
  92 <span class="keyword">typedef</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">wstring</span><span class="special">::</span><span class="identifier">const_iterator</span><span class="special">&gt;</span>   <span class="identifier">wssub_match</span><span class="special">;</span>
  93
  94 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
  95 <span class="keyword">class</span> <span class="identifier">sub_match</span> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
  96 <span class="special">{</span>
  97 <span class="keyword">public</span><span class="special">:</span>
  98    <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span>       <a class="link" href="sub_match.html#boost_regex.sub_match.value_type">value_type</a><span class="special">;</span>
  99    <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">difference_type</span>  <a class="link" href="sub_match.html#boost_regex.sub_match.diff_type">difference_type</a><span class="special">;</span>
 100    <span class="keyword">typedef</span>          <span class="identifier">BidirectionalIterator</span>                                    <a class="link" href="sub_match.html#boost_regex.sub_match.it_type">iterator</a><span class="special">;</span>
 101
 102    <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.matched">matched</a><span class="special">;</span>
 103
 104    <span class="identifier">difference_type</span> <a class="link" href="sub_match.html#boost_regex.sub_match.length">length</a><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
 105    <a class="link" href="sub_match.html#boost_regex.sub_match.cast">operator basic_string&lt;value_type&gt;</a><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
 106    <span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">value_type</span><span class="special">&gt;</span> <a class="link" href="sub_match.html#boost_regex.sub_match.str">str</a><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
 107
 108    <span class="keyword">int</span> <a class="link" href="sub_match.html#boost_regex.sub_match.compare1">compare</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&amp;</span> <span class="identifier">s</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
 109    <span class="keyword">int</span> <a class="link" href="sub_match.html#boost_regex.sub_match.compare2">compare</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">value_type</span><span class="special">&gt;&amp;</span> <span class="identifier">s</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
 110    <span class="keyword">int</span> <a class="link" href="sub_match.html#boost_regex.sub_match.compare3">compare</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span><span class="special">*</span> <span class="identifier">s</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
 111 <span class="preprocessor">#ifdef</span> <span class="identifier">BOOST_REGEX_MATCH_EXTRA</span>
 112    <span class="keyword">typedef</span> <span class="identifier">implementation</span><span class="special">-</span><span class="keyword">private</span> <a class="link" href="sub_match.html#boost_regex.sub_match.cap_seq_type">capture_sequence_type</a><span class="special">;</span>
 113    <span class="keyword">const</span> <span class="identifier">capture_sequence_type</span><span class="special">&amp;</span> <a class="link" href="sub_match.html#boost_regex.sub_match.captures">captures</a><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
 114 <span class="preprocessor">#endif</span>
 115 <span class="special">};</span>
 116 <span class="comment">//</span>
 117 <span class="comment">// comparisons to another sub_match:</span>
 118 <span class="comment">//</span>
 119 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 120 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare1">operator ==</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 121                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 122 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 123 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare2">operator !=</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 124                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 125 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 126 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare3">operator &lt;</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 127                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 128 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 129 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare4">operator &lt;=</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 130                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 131 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 132 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare5">operator &gt;=</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 133                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 134 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 135 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare6">operator &gt;</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 136                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 137
 138
 139 <span class="comment">//</span>
 140 <span class="comment">// comparisons to a basic_string:</span>
 141 <span class="comment">//</span>
 142 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 143 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare7">operator ==</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 144                                           <span class="identifier">traits</span><span class="special">,</span>
 145                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 146                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 147 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 148 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare8">operator != </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 149                                           <span class="identifier">traits</span><span class="special">,</span>
 150                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 151                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 152 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 153 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare9">operator &lt;</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 154                                           <span class="identifier">traits</span><span class="special">,</span>
 155                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 156                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 157 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 158 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare10">operator &gt;</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 159                                           <span class="identifier">traits</span><span class="special">,</span>
 160                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 161                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 162 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 163 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare11">operator &gt;= </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 164                                           <span class="identifier">traits</span><span class="special">,</span>
 165                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 166                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 167 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 168 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare12">operator &lt;= </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 169                                           <span class="identifier">traits</span><span class="special">,</span>
 170                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 171                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 172
 173 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 174 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare13">operator == </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 175                   <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 176                                           <span class="identifier">traits</span><span class="special">,</span>
 177                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 178 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 179 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare14">operator != </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 180                   <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 181                                           <span class="identifier">traits</span><span class="special">,</span>
 182                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 183 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 184 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare15">operator &lt; </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 185                <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 186                                        <span class="identifier">traits</span><span class="special">,</span>
 187                                        <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 188 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 189 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare16">operator &gt; </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 190                <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 191                                        <span class="identifier">traits</span><span class="special">,</span>
 192                                        <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 193 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 194 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare17">operator &gt;= </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 195                   <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 196                                        <span class="identifier">traits</span><span class="special">,</span>
 197                                        <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 198 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 199 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare18">operator &lt;= </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 200                   <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 201                                           <span class="identifier">traits</span><span class="special">,</span>
 202                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 203
 204 <span class="comment">//</span>
 205 <span class="comment">// comparisons to a pointer to a character array:</span>
 206 <span class="comment">//</span>
 207 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 208 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare19">operator == </a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">lhs</span><span class="special">,</span>
 209                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 210 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 211 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare20">operator != </a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">lhs</span><span class="special">,</span>
 212                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 213 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 214 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare21">operator &lt; </a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">lhs</span><span class="special">,</span>
 215                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 216 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 217 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare22">operator &gt; </a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">lhs</span><span class="special">,</span>
 218                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 219 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 220 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare23">operator &gt;= </a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">lhs</span><span class="special">,</span>
 221                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 222 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 223 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare24">operator &lt;= </a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">lhs</span><span class="special">,</span>
 224                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 225
 226 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 227 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare25">operator == </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 228                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">rhs</span><span class="special">);</span>
 229 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 230 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare26">operator != </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 231                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">rhs</span><span class="special">);</span>
 232 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 233 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare27">operator &lt; </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 234                <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">rhs</span><span class="special">);</span>
 235 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 236 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare28">operator &gt; </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 237                <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">rhs</span><span class="special">);</span>
 238 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 239 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare29">operator &gt;= </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 240                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">rhs</span><span class="special">);</span>
 241 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 242 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare30">operator &lt;= </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 243                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">rhs</span><span class="special">);</span>
 244
 245 <span class="comment">//</span>
 246 <span class="comment">// comparisons to a single character:</span>
 247 <span class="comment">//</span>
 248 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 249 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare31">operator == </a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 250                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 251 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 252 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare32">operator != </a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 253                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 254 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 255 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare33">operator &lt; </a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 256                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 257 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 258 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare34">operator &gt; </a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 259                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 260 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 261 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare35">operator &gt;= </a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 262                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 263 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 264 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare36">operator &lt;= </a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 265                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 266
 267 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 268 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare37">operator == </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 269                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 270 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 271 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare38">operator != </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 272                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 273 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 274 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare39">operator &lt; </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 275                <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 276 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 277 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare40">operator &gt; </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 278                <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 279 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 280 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare41">operator &gt;= </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 281                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 282 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 283 <span class="keyword">bool</span> <a class="link" href="sub_match.html#boost_regex.sub_match.op_compare42">operator &lt;= </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 284                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 285 <span class="comment">// </span>
 286 <span class="comment">// addition operators: </span>
 287 <span class="comment">//</span>
 288 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 289 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 290    <a class="link" href="sub_match.html#boost_regex.sub_match.op_add1">operator + </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 291                                        <span class="identifier">traits</span><span class="special">,</span>
 292                                        <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">s</span><span class="special">,</span>
 293                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m</span><span class="special">);</span>
 294 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 295 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 296    <a class="link" href="sub_match.html#boost_regex.sub_match.op_add2">operator + </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m</span><span class="special">,</span>
 297                <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 298                                        <span class="identifier">traits</span><span class="special">,</span>
 299                                        <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">s</span><span class="special">);</span>
 300 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 301 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">&gt;</span>
 302    <a class="link" href="sub_match.html#boost_regex.sub_match.op_add3">operator + </a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">s</span><span class="special">,</span>
 303                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m</span><span class="special">);</span>
 304 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 305 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">&gt;</span>
 306    <a class="link" href="sub_match.html#boost_regex.sub_match.op_add4">operator + </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m</span><span class="special">,</span>
 307                <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span> <span class="special">*</span> <span class="identifier">s</span><span class="special">);</span>
 308 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 309 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">&gt;</span>
 310    <a class="link" href="sub_match.html#boost_regex.sub_match.op_add5">operator + </a><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">s</span><span class="special">,</span>
 311                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m</span><span class="special">);</span>
 312 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 313 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">&gt;</span>
 314    <a class="link" href="sub_match.html#boost_regex.sub_match.op_add6">operator + </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m</span><span class="special">,</span>
 315                <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">s</span><span class="special">);</span>
 316 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 317 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">&gt;</span>
 318    <a class="link" href="sub_match.html#boost_regex.sub_match.op_add7">operator + </a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m1</span><span class="special">,</span>
 319                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m2</span><span class="special">);</span>
 320
 321 <span class="comment">//</span>
 322 <span class="comment">// stream inserter:</span>
 323 <span class="comment">//</span>
 324 <span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 325 <span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span>
 326    <a class="link" href="sub_match.html#boost_regex.sub_match.op_stream">operator &lt;&lt; </a><span class="special">(</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">os</span><span class="special">,</span>
 327                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m</span><span class="special">);</span>
 328
 329 <span class="special">}</span> <span class="comment">// namespace boost</span>
 330 </pre>
 331 <h5>
 332 <a name="boost_regex.ref.sub_match.h0"></a>
 333         <span class="phrase"><a name="boost_regex.ref.sub_match.description"></a></span><a class="link" href="sub_match.html#boost_regex.ref.sub_match.description">Description</a>
 334       </h5>
 335 <h6>
 336 <a name="boost_regex.ref.sub_match.h1"></a>
 337         <span class="phrase"><a name="boost_regex.ref.sub_match.members"></a></span><a class="link" href="sub_match.html#boost_regex.ref.sub_match.members">Members</a>
 338       </h6>
 339 <a name="boost_regex.sub_match.value_type"></a><pre class="programlisting"><span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">iterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="identifier">value_type</span><span class="special">;</span>
 340 </pre>
 341 <p>
 342         The type pointed to by the iterators.
 343       </p>
 344 <a name="boost_regex.sub_match.diff_type"></a><pre class="programlisting"><span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">iterator</span><span class="special">&gt;::</span><span class="identifier">difference_type</span> <span class="identifier">difference_type</span><span class="special">;</span>
 345 </pre>
 346 <p>
 347         A type that represents the difference between two iterators.
 348       </p>
 349 <a name="boost_regex.sub_match.it_type"></a><pre class="programlisting"><span class="keyword">typedef</span> <span class="identifier">BidirectionalIterator</span> <span class="identifier">iterator</span><span class="special">;</span>
 350 </pre>
 351 <p>
 352         The iterator type.
 353       </p>
 354 <a name="boost_regex.sub_match.first"></a><pre class="programlisting"><span class="identifier">iterator</span> <span class="identifier">first</span>
 355 </pre>
 356 <p>
 357         An iterator denoting the position of the start of the match.
 358       </p>
 359 <a name="boost_regex.sub_match.second"></a><pre class="programlisting"><span class="identifier">iterator</span> <span class="identifier">second</span>
 360 </pre>
 361 <p>
 362         An iterator denoting the position of the end of the match.
 363       </p>
 364 <a name="boost_regex.sub_match.matched"></a><pre class="programlisting"><span class="keyword">bool</span> <span class="identifier">matched</span>
 365 </pre>
 366 <p>
 367         A Boolean value denoting whether this sub-expression participated in the
 368         match.
 369       </p>
 370 <a name="boost_regex.sub_match.length"></a><pre class="programlisting"><span class="keyword">static</span> <span class="identifier">difference_type</span> <span class="identifier">length</span><span class="special">();</span>
 371 </pre>
 372 <p>
 373         <span class="bold"><strong>Effects</strong></span>: returns the length of this matched
 374         sub-expression, or 0 if this sub-expression was not matched: <code class="computeroutput"><span class="identifier">matched</span> <span class="special">?</span> <span class="identifier">distance</span><span class="special">(</span><span class="identifier">first</span><span class="special">,</span> <span class="identifier">second</span><span class="special">)</span> <span class="special">:</span> <span class="number">0</span><span class="special">)</span></code>.
 375       </p>
 376 <a name="boost_regex.sub_match.cast"></a><pre class="programlisting"><span class="keyword">operator</span> <span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">value_type</span><span class="special">&gt;()</span><span class="keyword">const</span><span class="special">;</span>
 377 </pre>
 378 <p>
 379         <span class="bold"><strong>Effects</strong></span>: converts <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code> into a string: returns <code class="computeroutput"><span class="special">(</span><span class="identifier">matched</span> <span class="special">?</span> <span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">value_type</span><span class="special">&gt;(</span><span class="identifier">first</span><span class="special">,</span> <span class="identifier">second</span><span class="special">)</span> <span class="special">:</span> <span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">value_type</span><span class="special">&gt;())</span></code>.
 380       </p>
 381 <a name="boost_regex.sub_match.str"></a><pre class="programlisting"><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">value_type</span><span class="special">&gt;</span> <span class="identifier">str</span><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
 382 </pre>
 383 <p>
 384         <span class="bold"><strong>Effects</strong></span>: returns a string representation
 385         of <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code>:
 386         <code class="computeroutput"><span class="special">(</span><span class="identifier">matched</span>
 387         <span class="special">?</span> <span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">value_type</span><span class="special">&gt;(</span><span class="identifier">first</span><span class="special">,</span> <span class="identifier">second</span><span class="special">)</span> <span class="special">:</span> <span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">value_type</span><span class="special">&gt;())</span></code>.
 388       </p>
 389 <a name="boost_regex.sub_match.compare1"></a><pre class="programlisting"><span class="keyword">int</span> <span class="identifier">compare</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&amp;</span> <span class="identifier">s</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
 390 </pre>
 391 <p>
 392         <span class="bold"><strong>Effects</strong></span>: performs a lexical comparison to
 393         <span class="emphasis"><em>s</em></span>: returns <code class="computeroutput"><span class="identifier">str</span><span class="special">().</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">s</span><span class="special">.</span><span class="identifier">str</span><span class="special">())</span></code>.
 394       </p>
 395 <a name="boost_regex.sub_match.compare2"></a><pre class="programlisting"><span class="keyword">int</span> <span class="identifier">compare</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">value_type</span><span class="special">&gt;&amp;</span> <span class="identifier">s</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
 396 </pre>
 397 <p>
 398         <span class="bold"><strong>Effects</strong></span>: compares <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code> to the string <span class="emphasis"><em>s</em></span>:
 399         returns <code class="computeroutput"><span class="identifier">str</span><span class="special">().</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></code>.
 400       </p>
 401 <a name="boost_regex.sub_match.compare3"></a><pre class="programlisting"><span class="keyword">int</span> <span class="identifier">compare</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span><span class="special">*</span> <span class="identifier">s</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
 402 </pre>
 403 <p>
 404         <span class="bold"><strong>Effects</strong></span>: compares <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code> to the null-terminated string <span class="emphasis"><em>s</em></span>:
 405         returns <code class="computeroutput"><span class="identifier">str</span><span class="special">().</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></code>.
 406       </p>
 407 <a name="boost_regex.sub_match.cap_seq_type"></a><pre class="programlisting"><span class="keyword">typedef</span> <span class="identifier">implementation</span><span class="special">-</span><span class="keyword">private</span> <span class="identifier">capture_sequence_type</span><span class="special">;</span>
 408 </pre>
 409 <p>
 410         Defines an implementation-specific type that satisfies the requirements of
 411         a standard library Sequence (21.1.1 including the optional Table 68 operations),
 412         whose value_type is a <code class="computeroutput"><span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span></code>. This type happens to be <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special">&lt;</span><span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span> <span class="special">&gt;</span></code>,
 413         but you shouldn't actually rely on that.
 414       </p>
 415 <a name="boost_regex.sub_match.captures"></a><pre class="programlisting"><span class="keyword">const</span> <span class="identifier">capture_sequence_type</span><span class="special">&amp;</span> <span class="identifier">captures</span><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
 416 </pre>
 417 <p>
 418         <span class="bold"><strong>Effects</strong></span>: returns a sequence containing all
 419         the captures obtained for this sub-expression.
 420       </p>
 421 <p>
 422         <span class="bold"><strong>Preconditions</strong></span>: the library must be built
 423         and used with BOOST_REGEX_MATCH_EXTRA defined, and you must pass the flag
 424         <code class="computeroutput"><span class="identifier">match_extra</span></code> to the regex
 425         matching functions ( <a class="link" href="regex_match.html" title="regex_match"><code class="computeroutput"><span class="identifier">regex_match</span></code></a>, <a class="link" href="regex_search.html" title="regex_search"><code class="computeroutput"><span class="identifier">regex_search</span></code></a>, <a class="link" href="regex_iterator.html" title="regex_iterator"><code class="computeroutput"><span class="identifier">regex_iterator</span></code></a> or <a class="link" href="regex_token_iterator.html" title="regex_token_iterator"><code class="computeroutput"><span class="identifier">regex_token_iterator</span></code></a>) in order for
 426         this member #function to be defined and return useful information.
 427       </p>
 428 <p>
 429         <span class="bold"><strong>Rationale</strong></span>: Enabling this feature has several
 430         consequences:
 431       </p>
 432 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
 433 <li class="listitem">
 434             sub_match occupies more memory resulting in complex expressions running
 435             out of memory or stack space more quickly during matching.
 436           </li>
 437 <li class="listitem">
 438             The matching algorithms are less efficient at handling some features
 439             (independent sub-expressions for example), even when match_extra is not
 440             used.
 441           </li>
 442 <li class="listitem">
 443             The matching algorithms are much less efficient (i.e. slower), when match_extra
 444             is used. Mostly this is down to the extra memory allocations that have
 445             to take place.
 446           </li>
 447 </ul></div>
 448 <h6>
 449 <a name="boost_regex.ref.sub_match.h2"></a>
 450         <span class="phrase"><a name="boost_regex.ref.sub_match.sub_match_non_member_operators"></a></span><a class="link" href="sub_match.html#boost_regex.ref.sub_match.sub_match_non_member_operators">sub_match
 451         non-member operators</a>
 452       </h6>
 453 <a name="boost_regex.sub_match.op_compare1"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 454 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">==</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 455                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 456 </pre>
 457 <p>
 458         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">)</span>
 459         <span class="special">==</span> <span class="number">0</span></code>.
 460       </p>
 461 <a name="boost_regex.sub_match.op_compare2"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 462 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">!=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 463                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 464 </pre>
 465 <p>
 466         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">)</span>
 467         <span class="special">!=</span> <span class="number">0</span></code>.
 468       </p>
 469 <a name="boost_regex.sub_match.op_compare3"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 470 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 471                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 472 </pre>
 473 <p>
 474         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">)</span>
 475         <span class="special">&lt;</span> <span class="number">0</span></code>.
 476       </p>
 477 <a name="boost_regex.sub_match.op_compare4"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 478 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 479                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 480 </pre>
 481 <p>
 482         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">)</span>
 483         <span class="special">&lt;=</span> <span class="number">0</span></code>.
 484       </p>
 485 <a name="boost_regex.sub_match.op_compare5"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 486 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 487                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 488 </pre>
 489 <p>
 490         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">)</span>
 491         <span class="special">&gt;=</span> <span class="number">0</span></code>.
 492       </p>
 493 <a name="boost_regex.sub_match.op_compare6"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 494 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 495                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 496 </pre>
 497 <p>
 498         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">compare</span><span class="special">(</span><span class="identifier">rhs</span><span class="special">)</span>
 499         <span class="special">&gt;</span> <span class="number">0</span></code>.
 500       </p>
 501 <a name="boost_regex.sub_match.op_compare7"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 502 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">==</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 503                                                           <span class="identifier">traits</span><span class="special">,</span>
 504                                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 505                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 506 </pre>
 507 <p>
 508         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 509         <span class="special">==</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 510       </p>
 511 <a name="boost_regex.sub_match.op_compare8"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 512 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">!=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 513                                                           <span class="identifier">traits</span><span class="special">,</span>
 514                                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 515                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 516 </pre>
 517 <p>
 518         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 519         <span class="special">!=</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 520       </p>
 521 <a name="boost_regex.sub_match.op_compare9"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 522 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 523                                          <span class="identifier">traits</span><span class="special">,</span>
 524                                          <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 525                  <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 526 </pre>
 527 <p>
 528         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 529         <span class="special">&lt;</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 530       </p>
 531 <a name="boost_regex.sub_match.op_compare10"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 532 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 533                                                          <span class="identifier">traits</span><span class="special">,</span>
 534                                                          <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 535                  <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 536 </pre>
 537 <p>
 538         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 539         <span class="special">&gt;</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 540       </p>
 541 <a name="boost_regex.sub_match.op_compare11"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 542 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 543                                           <span class="identifier">traits</span><span class="special">,</span>
 544                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 545                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 546 </pre>
 547 <p>
 548         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 549         <span class="special">&gt;=</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 550       </p>
 551 <a name="boost_regex.sub_match.op_compare12"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 552 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 553                                           <span class="identifier">traits</span><span class="special">,</span>
 554                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 555                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 556 </pre>
 557 <p>
 558         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 559         <span class="special">&lt;=</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 560       </p>
 561 <a name="boost_regex.sub_match.op_compare13"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 562 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">==</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 563                   <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 564                                           <span class="identifier">traits</span><span class="special">,</span>
 565                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 566 </pre>
 567 <p>
 568         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 569         <span class="special">==</span> <span class="identifier">rhs</span></code>.
 570       </p>
 571 <a name="boost_regex.sub_match.op_compare14"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 572 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">!=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 573                   <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 574                                           <span class="identifier">traits</span><span class="special">,</span>
 575                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 576 </pre>
 577 <p>
 578         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 579         <span class="special">!=</span> <span class="identifier">rhs</span></code>.
 580       </p>
 581 <a name="boost_regex.sub_match.op_compare15"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 582 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 583                <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 584                                        <span class="identifier">traits</span><span class="special">,</span>
 585                                        <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 586 </pre>
 587 <p>
 588         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 589         <span class="special">&lt;</span> <span class="identifier">rhs</span></code>.
 590       </p>
 591 <a name="boost_regex.sub_match.op_compare16"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 592 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 593                  <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 594                                          <span class="identifier">traits</span><span class="special">,</span>
 595                                          <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 596 </pre>
 597 <p>
 598         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 599         <span class="special">&gt;</span> <span class="identifier">rhs</span></code>.
 600       </p>
 601 <a name="boost_regex.sub_match.op_compare17"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 602 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 603                   <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 604                                           <span class="identifier">traits</span><span class="special">,</span>
 605                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 606 </pre>
 607 <p>
 608         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 609         <span class="special">&gt;=</span> <span class="identifier">rhs</span></code>.
 610       </p>
 611 <a name="boost_regex.sub_match.op_compare18"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 612 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 613                   <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 614                                           <span class="identifier">traits</span><span class="special">,</span>
 615                                           <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 616 </pre>
 617 <p>
 618         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 619         <span class="special">&lt;=</span> <span class="identifier">rhs</span></code>.
 620       </p>
 621 <a name="boost_regex.sub_match.op_compare19"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 622 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">==</span> <span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">lhs</span><span class="special">,</span>
 623                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 624 </pre>
 625 <p>
 626         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 627         <span class="special">==</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 628       </p>
 629 <a name="boost_regex.sub_match.op_compare20"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 630 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">!=</span> <span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">lhs</span><span class="special">,</span>
 631                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 632 </pre>
 633 <p>
 634         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 635         <span class="special">!=</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 636       </p>
 637 <a name="boost_regex.sub_match.op_compare21"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 638 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;</span> <span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">lhs</span><span class="special">,</span>
 639                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 640 </pre>
 641 <p>
 642         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 643         <span class="special">&lt;</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 644       </p>
 645 <a name="boost_regex.sub_match.op_compare22"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 646 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;</span> <span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">lhs</span><span class="special">,</span>
 647                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 648 </pre>
 649 <p>
 650         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 651         <span class="special">&gt;</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 652       </p>
 653 <a name="boost_regex.sub_match.op_compare23"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 654 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;=</span> <span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">lhs</span><span class="special">,</span>
 655                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 656 </pre>
 657 <p>
 658         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 659         <span class="special">&gt;=</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 660       </p>
 661 <a name="boost_regex.sub_match.op_compare24"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 662 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;=</span> <span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">lhs</span><span class="special">,</span>
 663                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 664 </pre>
 665 <p>
 666         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 667         <span class="special">&lt;=</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 668       </p>
 669 <a name="boost_regex.sub_match.op_compare25"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 670 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">==</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 671                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">rhs</span><span class="special">);</span>
 672 </pre>
 673 <p>
 674         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 675         <span class="special">==</span> <span class="identifier">rhs</span></code>.
 676       </p>
 677 <a name="boost_regex.sub_match.op_compare26"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 678 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">!=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 679                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">rhs</span><span class="special">);</span>
 680 </pre>
 681 <p>
 682         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 683         <span class="special">!=</span> <span class="identifier">rhs</span></code>.
 684       </p>
 685 <a name="boost_regex.sub_match.op_compare27"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 686 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 687                <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">rhs</span><span class="special">);</span>
 688 </pre>
 689 <p>
 690         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 691         <span class="special">&lt;</span> <span class="identifier">rhs</span></code>.
 692       </p>
 693 <a name="boost_regex.sub_match.op_compare28"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 694 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 695                <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">rhs</span><span class="special">);</span>
 696 </pre>
 697 <p>
 698         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 699         <span class="special">&gt;</span> <span class="identifier">rhs</span></code>.
 700       </p>
 701 <a name="boost_regex.sub_match.op_compare29"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 702 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 703                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">rhs</span><span class="special">);</span>
 704 </pre>
 705 <p>
 706         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 707         <span class="special">&gt;=</span> <span class="identifier">rhs</span></code>.
 708       </p>
 709 <a name="boost_regex.sub_match.op_compare30"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 710 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 711                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">rhs</span><span class="special">);</span>
 712 </pre>
 713 <p>
 714         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 715         <span class="special">&lt;=</span> <span class="identifier">rhs</span></code>.
 716       </p>
 717 <a name="boost_regex.sub_match.op_compare31"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 718 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">==</span> <span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 719                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 720 </pre>
 721 <p>
 722         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 723         <span class="special">==</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 724       </p>
 725 <a name="boost_regex.sub_match.op_compare32"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 726 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">!=</span> <span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 727                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 728 </pre>
 729 <p>
 730         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 731         <span class="special">!=</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 732       </p>
 733 <a name="boost_regex.sub_match.op_compare33"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 734 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;</span> <span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 735                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 736 </pre>
 737 <p>
 738         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 739         <span class="special">&lt;</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 740       </p>
 741 <a name="boost_regex.sub_match.op_compare34"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 742 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;</span> <span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 743                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 744 </pre>
 745 <p>
 746         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 747         <span class="special">&gt;</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 748       </p>
 749 <a name="boost_regex.sub_match.op_compare35"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 750 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;=</span> <span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 751                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 752 </pre>
 753 <p>
 754         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 755         <span class="special">&gt;=</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 756       </p>
 757 <a name="boost_regex.sub_match.op_compare36"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 758 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;=</span> <span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 759                   <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 760 </pre>
 761 <p>
 762         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span>
 763         <span class="special">&lt;=</span> <span class="identifier">rhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 764       </p>
 765 <a name="boost_regex.sub_match.op_compare37"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 766 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">==</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 767                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 768 </pre>
 769 <p>
 770         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 771         <span class="special">==</span> <span class="identifier">rhs</span></code>.
 772       </p>
 773 <a name="boost_regex.sub_match.op_compare38"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 774 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">!=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 775                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 776 </pre>
 777 <p>
 778         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 779         <span class="special">!=</span> <span class="identifier">rhs</span></code>.
 780       </p>
 781 <a name="boost_regex.sub_match.op_compare39"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 782 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 783                <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 784 </pre>
 785 <p>
 786         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 787         <span class="special">&lt;</span> <span class="identifier">rhs</span></code>.
 788       </p>
 789 <a name="boost_regex.sub_match.op_compare40"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 790 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 791                <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 792 </pre>
 793 <p>
 794         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 795         <span class="special">&gt;</span> <span class="identifier">rhs</span></code>.
 796       </p>
 797 <a name="boost_regex.sub_match.op_compare41"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 798 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&gt;=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 799                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 800 </pre>
 801 <p>
 802         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 803         <span class="special">&gt;=</span> <span class="identifier">rhs</span></code>.
 804       </p>
 805 <a name="boost_regex.sub_match.op_compare42"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 806 <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">&lt;=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">lhs</span><span class="special">,</span>
 807                   <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
 808 </pre>
 809 <p>
 810         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">lhs</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 811         <span class="special">&lt;=</span> <span class="identifier">rhs</span></code>.
 812       </p>
 813 <p>
 814         The addition operators for <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a> allow you to add a <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a>
 815         to any type to which you can add a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span></code>
 816         and obtain a new string as the result.
 817       </p>
 818 <a name="boost_regex.sub_match.op_add1"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 819 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 820    <span class="keyword">operator</span> <span class="special">+</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 821                                        <span class="identifier">traits</span><span class="special">,</span>
 822                                        <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">s</span><span class="special">,</span>
 823                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m</span><span class="special">);</span>
 824 </pre>
 825 <p>
 826         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">s</span>
 827         <span class="special">+</span> <span class="identifier">m</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 828       </p>
 829 <a name="boost_regex.sub_match.op_add2"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 830 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">&gt;</span>
 831    <span class="keyword">operator</span> <span class="special">+</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m</span><span class="special">,</span>
 832                <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">,</span>
 833                                        <span class="identifier">traits</span><span class="special">,</span>
 834                                        <span class="identifier">Allocator</span><span class="special">&gt;&amp;</span> <span class="identifier">s</span><span class="special">);</span>
 835 </pre>
 836 <p>
 837         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">m</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 838         <span class="special">+</span> <span class="identifier">s</span></code>.
 839       </p>
 840 <a name="boost_regex.sub_match.op_add3"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 841 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">&gt;</span>
 842    <span class="keyword">operator</span> <span class="special">+</span> <span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">s</span><span class="special">,</span>
 843                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m</span><span class="special">);</span>
 844 </pre>
 845 <p>
 846         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">s</span>
 847         <span class="special">+</span> <span class="identifier">m</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 848       </p>
 849 <a name="boost_regex.sub_match.op_add4"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 850 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">&gt;</span>
 851    <span class="keyword">operator</span> <span class="special">+</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m</span><span class="special">,</span>
 852                <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span> <span class="special">*</span> <span class="identifier">s</span><span class="special">);</span>
 853 </pre>
 854 <p>
 855         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">m</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 856         <span class="special">+</span> <span class="identifier">s</span></code>.
 857       </p>
 858 <a name="boost_regex.sub_match.op_add5"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 859 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">&gt;</span>
 860    <span class="keyword">operator</span> <span class="special">+</span> <span class="special">(</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">s</span><span class="special">,</span>
 861                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m</span><span class="special">);</span>
 862 </pre>
 863 <p>
 864         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">s</span>
 865         <span class="special">+</span> <span class="identifier">m</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 866       </p>
 867 <a name="boost_regex.sub_match.op_add6"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 868 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">&gt;</span>
 869    <span class="keyword">operator</span> <span class="special">+</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m</span><span class="special">,</span>
 870                <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">s</span><span class="special">);</span>
 871 </pre>
 872 <p>
 873         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">m</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 874         <span class="special">+</span> <span class="identifier">s</span></code>.
 875       </p>
 876 <a name="boost_regex.sub_match.op_add7"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 877 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;::</span><span class="identifier">value_type</span><span class="special">&gt;</span>
 878    <span class="keyword">operator</span> <span class="special">+</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m1</span><span class="special">,</span>
 879                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m2</span><span class="special">);</span>
 880 </pre>
 881 <p>
 882         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">m1</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span>
 883         <span class="special">+</span> <span class="identifier">m2</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>.
 884       </p>
 885 <h6>
 886 <a name="boost_regex.ref.sub_match.h3"></a>
 887         <span class="phrase"><a name="boost_regex.ref.sub_match.stream_inserter"></a></span><a class="link" href="sub_match.html#boost_regex.ref.sub_match.stream_inserter">Stream
 888         inserter</a>
 889       </h6>
 890 <a name="boost_regex.sub_match.op_stream"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">&gt;</span>
 891 <span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span>
 892    <span class="keyword">operator</span> <span class="special">&lt;&lt;</span> <span class="special">(</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">&gt;&amp;</span> <span class="identifier">os</span>
 893                <span class="keyword">const</span> <span class="identifier">sub_match</span><span class="special">&lt;</span><span class="identifier">BidirectionalIterator</span><span class="special">&gt;&amp;</span> <span class="identifier">m</span><span class="special">);</span>
 894 </pre>
 895 <p>
 896         <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="special">(</span><span class="identifier">os</span> <span class="special">&lt;&lt;</span> <span class="identifier">m</span><span class="special">.</span><span class="identifier">str</span><span class="special">())</span></code>.
 897       </p>
 898 </div>
 899 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 900 <td align="left"></td>
 901 <td align="right"><div class="copyright-footer">Copyright &#169; 1998-2013 John Maddock<p>
 902         Distributed under the Boost Software License, Version 1.0. (See accompanying
 903         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
 904       </p>
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