doc/html/boost/xpressive/op/dynamic_cast_.html

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  26 <a name="boost.xpressive.op.dynamic_cast_"></a><div class="titlepage"></div>
  27 <div class="refnamediv">
  28 <h2><span class="refentrytitle">Struct template dynamic_cast_</span></h2>
  29 <p>boost::xpressive::op::dynamic_cast_ &#8212; <code class="computeroutput"><a class="link" href="dynamic_cast_.html" title="Struct template dynamic_cast_">dynamic_cast_</a>&lt;&gt;</code> is a PolymorphicFunctionObject for dynamically casting a parameter to a different type. </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="../../../xpressive/reference.html#header.boost.xpressive.regex_actions_hpp" title="Header &lt;boost/xpressive/regex_actions.hpp&gt;">boost/xpressive/regex_actions.hpp</a>&gt;
  33
  34 </span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">&gt;</span>
  35 <span class="keyword">struct</span> <a class="link" href="dynamic_cast_.html" title="Struct template dynamic_cast_">dynamic_cast_</a> <span class="special">{</span>
  36   <span class="comment">// types</span>
  37   <span class="keyword">typedef</span> <span class="identifier">T</span> <a name="boost.xpressive.op.dynamic_cast_.result_type"></a><span class="identifier">result_type</span><span class="special">;</span>
  38
  39   <span class="comment">// <a class="link" href="dynamic_cast_.html#idp355541232-bb">public member functions</a></span>
  40   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Value<span class="special">&gt;</span> <span class="identifier">T</span> <a class="link" href="dynamic_cast_.html#idp355541792-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">Value</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  41 <span class="special">}</span><span class="special">;</span></pre></div>
  42 <div class="refsect1">
  43 <a name="idp533184880"></a><h2>Description</h2>
  44 <p>
  45 </p>
  46 <div class="refsect2">
  47 <a name="idp533185552"></a><h3>Template Parameters</h3>
  48 <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
  49 <pre class="literallayout"><span class="keyword">typename</span> T</pre>
  50 <p>The type to which to dynamically cast the parameter. </p>
  51 </li></ol></div>
  52 </div>
  53 <div class="refsect2">
  54 <a name="idp533188704"></a><h3>
  55 <a name="idp355541232-bb"></a><code class="computeroutput">dynamic_cast_</code> public member functions</h3>
  56 <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
  57 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Value<span class="special">&gt;</span> <span class="identifier">T</span> <a name="idp355541792-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">Value</span> <span class="keyword">const</span> <span class="special">&amp;</span> val<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
  58 <p>
  59
  60 </p>
  61 <div class="variablelist"><table border="0" class="variablelist compact">
  62 <colgroup>
  63 <col align="left" valign="top">
  64 <col>
  65 </colgroup>
  66 <tbody>
  67 <tr>
  68 <td><p><span class="term">Parameters:</span></p></td>
  69 <td><div class="variablelist"><table border="0" class="variablelist compact">
  70 <colgroup>
  71 <col align="left" valign="top">
  72 <col>
  73 </colgroup>
  74 <tbody><tr>
  75 <td><p><span class="term"><code class="computeroutput">val</code></span></p></td>
  76 <td><p>The value to dynamically cast. </p></td>
  77 </tr></tbody>
  78 </table></div></td>
  79 </tr>
  80 <tr>
  81 <td><p><span class="term">Returns:</span></p></td>
  82 <td><p><code class="computeroutput">dynamic_cast&lt;T&gt;(val)</code> </p></td>
  83 </tr>
  84 </tbody>
  85 </table></div>
  86 </li></ol></div>
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  91 <td align="left"></td>
  92 <td align="right"><div class="copyright-footer">Copyright &#169; 2007 Eric Niebler<p>
  93         Distributed under the Boost Software License, Version 1.0. (See accompanying
  94         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>)
  95       </p>
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