docs/reference/html/structsigc_1_1visitor.html

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  21    <div id="projectname">libsigc++
  22    &#160;<span id="projectnumber">2.99.2</span>
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  55 <a href="#pub-static-methods">Static Public Member Functions</a> &#124;
  56 <a href="structsigc_1_1visitor-members.html">List of all members</a>  </div>
  57   <div class="headertitle">
  58 <div class="title">sigc::visitor&lt; T_functor &gt; Struct Template Reference<div class="ingroups"><a class="el" href="group__sigcfunctors.html">Functors</a></div></div>  </div>
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  61
  62 <p><a class="el" href="structsigc_1_1visitor.html#a9fe5d6be845e622a99a0db5d3621d4b3">sigc::visitor&lt;T_functor&gt;::do_visit_each()</a> performs a functor on each of the targets of a functor.
  63  <a href="structsigc_1_1visitor.html#details">More...</a></p>
  64
  65 <p><code>#include &lt;sigc++/visit_each.h&gt;</code></p>
  66 <table class="memberdecls">
  67 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
  68 Static Public Member Functions</h2></td></tr>
  69 <tr class="memitem:a9fe5d6be845e622a99a0db5d3621d4b3"><td class="memTemplParams" colspan="2">template&lt;class T_action &gt; </td></tr>
  70 <tr class="memitem:a9fe5d6be845e622a99a0db5d3621d4b3"><td class="memTemplItemLeft" align="right" valign="top">static void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="structsigc_1_1visitor.html#a9fe5d6be845e622a99a0db5d3621d4b3">do_visit_each</a> (const T_action&amp; _A_action, const T_functor&amp; _A_functor)</td></tr>
  71 <tr class="separator:a9fe5d6be845e622a99a0db5d3621d4b3"><td class="memSeparator" colspan="2">&#160;</td></tr>
  72 </table>
  73 <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
  74 <div class="textblock"><h3>template&lt;class T_functor&gt;<br />
  75 struct sigc::visitor&lt; T_functor &gt;</h3>
  76
  77 <p><a class="el" href="structsigc_1_1visitor.html#a9fe5d6be845e622a99a0db5d3621d4b3">sigc::visitor&lt;T_functor&gt;::do_visit_each()</a> performs a functor on each of the targets of a functor. </p>
  78 <p>All unknown types just call <em>_A_action</em> on them. Add specializations that specialize the <em>T_functor</em> argument for your own functor types, so that subobjects get visited. This is needed to enable auto-disconnection support for your functor types.</p>
  79 <dl class="section user"><dt>Example:</dt><dd><div class="fragment"><div class="line"><span class="keyword">namespace </span>some_ns</div>
  80 <div class="line">{</div>
  81 <div class="line">  <span class="keyword">struct </span>some_functor</div>
  82 <div class="line">  {</div>
  83 <div class="line">    <span class="keywordtype">void</span> operator()() {}</div>
  84 <div class="line">    some_possibly_sigc_trackable_derived_type some_data_member;</div>
  85 <div class="line">    some_other_functor_type some_other_functor;</div>
  86 <div class="line">  };</div>
  87 <div class="line">}</div>
  88 <div class="line"></div>
  89 <div class="line"><span class="keyword">namespace </span><a class="code" href="namespacesigc.html">sigc</a></div>
  90 <div class="line">{</div>
  91 <div class="line">  <span class="keyword">template</span> &lt;&gt;</div>
  92 <div class="line">  <span class="keyword">struct </span>visitor&lt;some_ns::some_functor&gt;</div>
  93 <div class="line">  {</div>
  94 <div class="line">    <span class="keyword">template</span> &lt;<span class="keyword">class</span> T_action&gt;</div>
  95 <div class="line">    <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="structsigc_1_1visitor.html#a9fe5d6be845e622a99a0db5d3621d4b3">do_visit_each</a>(<span class="keyword">const</span> T_action&amp; _A_action,</div>
  96 <div class="line">                              <span class="keyword">const</span> some_ns::some_functor&amp; _A_target)</div>
  97 <div class="line">    {</div>
  98 <div class="line">      <a class="code" href="group__sigcfunctors.html#ga64cb7832acc1e58efb5ffe0b4f5e9404">sigc::visit_each</a>(_A_action, _A_target.some_data_member);</div>
  99 <div class="line">      <a class="code" href="group__sigcfunctors.html#ga64cb7832acc1e58efb5ffe0b4f5e9404">sigc::visit_each</a>(_A_action, _A_target.some_other_functor);</div>
 100 <div class="line">    }</div>
 101 <div class="line">  };</div>
 102 <div class="line">}</div>
 103 </div><!-- fragment --> </dd></dl>
 104 </div><h2 class="groupheader">Member Function Documentation</h2>
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 106 <div class="memitem">
 107 <div class="memproto">
 108 <div class="memtemplate">
 109 template &lt;class T_functor &gt; </div>
 110 <div class="memtemplate">
 111 template &lt;class T_action &gt; </div>
 112 <table class="mlabels">
 113   <tr>
 114   <td class="mlabels-left">
 115       <table class="memname">
 116         <tr>
 117           <td class="memname">static void <a class="el" href="structsigc_1_1visitor.html">sigc::visitor</a>&lt; T_functor &gt;::do_visit_each </td>
 118           <td>(</td>
 119           <td class="paramtype">const T_action &amp;&#160;</td>
 120           <td class="paramname"><em>_A_action</em>, </td>
 121         </tr>
 122         <tr>
 123           <td class="paramkey"></td>
 124           <td></td>
 125           <td class="paramtype">const T_functor &amp;&#160;</td>
 126           <td class="paramname"><em>_A_functor</em>&#160;</td>
 127         </tr>
 128         <tr>
 129           <td></td>
 130           <td>)</td>
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