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  26 <a name="boost.cnv.lexical_cast"></a><div class="titlepage"></div>
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  28 <h2><span class="refentrytitle">Struct lexical_cast</span></h2>
  29 <p>boost::cnv::lexical_cast &#8212; boost::lexical_cast-based converter </p>
  30 </div>
  31 <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
  32 <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../header/boost/convert/lexical_cast_hpp.html" title="Header &lt;boost/convert/lexical_cast.hpp&gt;">boost/convert/lexical_cast.hpp</a>&gt;
  33
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  35 <span class="keyword">struct</span> <a class="link" href="lexical_cast.html" title="Struct lexical_cast">lexical_cast</a> <span class="special">{</span>
  36
  37   <span class="comment">// <a class="link" href="lexical_cast.html#idp35787872-bb">public member functions</a></span>
  38   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> TypeOut<span class="special">,</span> <span class="keyword">typename</span> TypeIn<span class="special">&gt;</span>
  39     <span class="keyword">void</span> <a class="link" href="lexical_cast.html#idp35788432-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">TypeIn</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">optional</span><span class="special">&lt;</span> <span class="identifier">TypeOut</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  40 <span class="special">}</span><span class="special">;</span></pre></div>
  41 <div class="refsect1">
  42 <a name="idp101433040"></a><h2>Description</h2>
  43 <p>The purpose of the converter is to</p>
  44 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
  45 <li class="listitem"><p>Make use of the boost::lexical_cast functionality and performance that many people have become accustomed to and comfortable with;</p></li>
  46 <li class="listitem"><p>Demonstrate how existing independent conversion/transformation-related facilities might be The converter can easily replace boost::lexical_cast, adding flexibility and convenience. </p></li>
  47 </ul></div>
  48 <p>
  49 </p>
  50 <div class="refsect2">
  51 <a name="idp101435248"></a><h3>
  52 <a name="idp35787872-bb"></a><code class="computeroutput">lexical_cast</code> public member functions</h3>
  53 <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> TypeOut<span class="special">,</span> <span class="keyword">typename</span> TypeIn<span class="special">&gt;</span>
  54   <span class="keyword">void</span> <a name="idp35788432-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">TypeIn</span> <span class="keyword">const</span> <span class="special">&amp;</span> value_in<span class="special">,</span>
  55                   <span class="identifier">boost</span><span class="special">::</span><span class="identifier">optional</span><span class="special">&lt;</span> <span class="identifier">TypeOut</span> <span class="special">&gt;</span> <span class="special">&amp;</span> result_out<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li></ol></div>
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