ceph/src/boost/libs/type_traits/doc/html/boost_typetraits/reference/add_const.html

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  26 <div class="titlepage"><div><div><h3 class="title">
  27 <a name="boost_typetraits.reference.add_const"></a><a class="link" href="add_const.html" title="add_const">add_const</a>
  28 </h3></div></div></div>
  29 <pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  30 <span class="keyword">struct</span> <span class="identifier">add_const</span>
  31 <span class="special">{</span>
  32    <span class="keyword">typedef</span> <em class="replaceable"><code>see-below</code></em> <span class="identifier">type</span><span class="special">;</span>
  33 <span class="special">};</span>
  34 </pre>
  35 <p>
  36         <span class="bold"><strong>type:</strong></span> The same type as <code class="computeroutput"><span class="identifier">T</span>
  37         <span class="keyword">const</span></code> for all <code class="computeroutput"><span class="identifier">T</span></code>.
  38       </p>
  39 <p>
  40         <span class="bold"><strong>C++ Standard Reference:</strong></span> 3.9.3.
  41       </p>
  42 <p>
  43         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"> <span class="preprocessor">#include</span>
  44         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">add_const</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
  45         or <code class="computeroutput"> <span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
  46       </p>
  47 <div class="table">
  48 <a name="boost_typetraits.reference.add_const.examples"></a><p class="title"><b>Table&#160;1.10.&#160;Examples</b></p>
  49 <div class="table-contents"><table class="table" summary="Examples">
  50 <colgroup>
  51 <col>
  52 <col>
  53 </colgroup>
  54 <thead><tr>
  55 <th>
  56                 <p>
  57                   Expression
  58                 </p>
  59               </th>
  60 <th>
  61                 <p>
  62                   Result Type
  63                 </p>
  64               </th>
  65 </tr></thead>
  66 <tbody>
  67 <tr>
  68 <td>
  69                 <p>
  70                   <code class="computeroutput"><span class="identifier">add_const</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;::</span><span class="identifier">type</span></code>
  71                 </p>
  72               </td>
  73 <td>
  74                 <p>
  75                   <code class="computeroutput"><span class="keyword">int</span> <span class="keyword">const</span></code>
  76                 </p>
  77               </td>
  78 </tr>
  79 <tr>
  80 <td>
  81                 <p>
  82                   <code class="computeroutput"><span class="identifier">add_const</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&amp;&gt;::</span><span class="identifier">type</span></code>
  83                 </p>
  84               </td>
  85 <td>
  86                 <p>
  87                   <code class="computeroutput"><span class="keyword">int</span><span class="special">&amp;</span></code>
  88                 </p>
  89               </td>
  90 </tr>
  91 <tr>
  92 <td>
  93                 <p>
  94                   <code class="computeroutput"><span class="identifier">add_const</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">*&gt;::</span><span class="identifier">type</span></code>
  95                 </p>
  96               </td>
  97 <td>
  98                 <p>
  99                   <code class="computeroutput"><span class="keyword">int</span><span class="special">*</span>
 100                   <span class="keyword">const</span></code>
 101                 </p>
 102               </td>
 103 </tr>
 104 <tr>
 105 <td>
 106                 <p>
 107                   <code class="computeroutput"><span class="identifier">add_const</span><span class="special">&lt;</span><span class="keyword">int</span> <span class="keyword">const</span><span class="special">&gt;::</span><span class="identifier">type</span></code>
 108                 </p>
 109               </td>
 110 <td>
 111                 <p>
 112                   <code class="computeroutput"><span class="keyword">int</span> <span class="keyword">const</span></code>
 113                 </p>
 114               </td>
 115 </tr>
 116 </tbody>
 117 </table></div>
 118 </div>
 119 <br class="table-break"><p>
 120         <span class="bold"><strong>Compiler Compatibility:</strong></span> All current compilers
 121         are supported by this trait.
 122       </p>
 123 </div>
 124 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 125 <td align="left"></td>
 126 <td align="right"><div class="copyright-footer">Copyright &#169; 2000, 2011 Adobe Systems Inc, David Abrahams,
 127       Frederic Bron, Steve Cleary, Beman Dawes, Aleksey Gurtovoy, Howard Hinnant,
 128       Jesse Jones, Mat Marcus, Itay Maman, John Maddock, Alexander Nasonov, Thorsten
 129       Ottosen, Roman Perepelitsa, Robert Ramey, Jeremy Siek, Robert Stewart and Steven
 130       Watanabe<p>
 131         Distributed under the Boost Software License, Version 1.0. (See accompanying
 132         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>)
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