ceph/src/boost/libs/mpl/doc/refmanual/contains.html

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  12 <td class="header-group page-location"><a href="../refmanual.html" class="navigation-link">Front Page</a> / <a href="./algorithms.html" class="navigation-link">Algorithms</a> / <a href="./querying-algorithms.html" class="navigation-link">Querying Algorithms</a> / <a href="./contains.html" class="navigation-link">contains</a></td>
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  14 <div class="section" id="contains">
  15 <h1><a class="toc-backref" href="./querying-algorithms.html#id1477">contains</a></h1>
  16 <div class="section" id="id551">
  17 <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3>
  18 <pre class="literal-block">
  19 template&lt;
  20       typename Sequence
  21     , typename T
  22     &gt;
  23 struct <a href="./contains.html" class="identifier">contains</a>
  24 {
  25     typedef <em>unspecified</em> type;
  26 };
  27 </pre>
  28 </div>
  29 <div class="section" id="id552">
  30 <h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
  31 <p>Returns a true-valued <a class="reference internal" href="./integral-constant.html">Integral Constant</a> if one or more elements in <tt class="literal"><span class="pre">Sequence</span></tt>
  32 are identical to <tt class="literal"><span class="pre">T</span></tt>.</p>
  33 </div>
  34 <div class="section" id="id553">
  35 <h3><a class="subsection-title" href="#header" name="header">Header</a></h3>
  36 <pre class="literal-block">
  37 #include &lt;<a href="../../../../boost/mpl/contains.hpp" class="header">boost/mpl/contains.hpp</a>&gt;
  38 </pre>
  39 </div>
  40 <div class="section" id="id554">
  41 <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3>
  42 <table border="1" class="docutils table">
  43 <colgroup>
  44 <col width="19%" />
  45 <col width="35%" />
  46 <col width="45%" />
  47 </colgroup>
  48 <thead valign="bottom">
  49 <tr><th class="head">Parameter</th>
  50 <th class="head">Requirement</th>
  51 <th class="head">Description</th>
  52 </tr>
  53 </thead>
  54 <tbody valign="top">
  55 <tr><td><tt class="literal"><span class="pre">Sequence</span></tt></td>
  56 <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td>
  57 <td>A sequence to be examined.</td>
  58 </tr>
  59 <tr><td><tt class="literal"><span class="pre">T</span></tt></td>
  60 <td>Any type</td>
  61 <td>A type to search for.</td>
  62 </tr>
  63 </tbody>
  64 </table>
  65 </div>
  66 <div class="section" id="id555">
  67 <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3>
  68 <p>For any <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a> <tt class="literal"><span class="pre">s</span></tt> and arbitrary type <tt class="literal"><span class="pre">t</span></tt>:</p>
  69 <pre class="literal-block">
  70 typedef <a href="./contains.html" class="identifier">contains</a>&lt;s,t&gt;::type r;
  71 </pre>
  72 <table class="docutils field-list" frame="void" rules="none">
  73 <col class="field-name" />
  74 <col class="field-body" />
  75 <tbody valign="top">
  76 <tr class="field"><th class="field-name">Return type:</th><td class="field-body"><p class="first"><a class="reference internal" href="./integral-constant.html">Integral Constant</a>.</p>
  77 </td>
  78 </tr>
  79 <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><p class="first">Equivalent to</p>
  80 <pre class="last literal-block">
  81 typedef <a href="./not.html" class="identifier">not_</a>&lt; is_same&lt;
  82       <a href="./find.html" class="identifier">find</a>&lt;s,t&gt;::type
  83     , <a href="./end.html" class="identifier">end</a>&lt;s&gt;::type
  84     &gt; &gt;::type r;
  85 </pre>
  86 </td>
  87 </tr>
  88 </tbody>
  89 </table>
  90 </div>
  91 <div class="section" id="id556">
  92 <h3><a class="subsection-title" href="#complexity" name="complexity">Complexity</a></h3>
  93 <p>Linear. At most <tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a>&lt;s&gt;::value</span></tt> comparisons for identity.</p>
  94 </div>
  95 <div class="section" id="id557">
  96 <h3><a class="subsection-title" href="#example" name="example">Example</a></h3>
  97 <pre class="literal-block">
  98 typedef <a href="./vector.html" class="identifier">vector</a>&lt;char,int,unsigned,long,unsigned long&gt; types;
  99 <a href="./assert-not.html" class="identifier">BOOST_MPL_ASSERT_NOT</a>(( <a href="./contains.html" class="identifier">contains</a>&lt;types,bool&gt; ));
 100 </pre>
 101 </div>
 102 <div class="section" id="id558">
 103 <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3>
 104 <p><a class="reference internal" href="./querying-algorithms.html">Querying Algorithms</a>, <a class="reference internal" href="./find.html">find</a>, <a class="reference internal" href="./find-if.html">find_if</a>, <a class="reference internal" href="./count.html">count</a>, <a class="reference internal" href="./lower-bound.html">lower_bound</a></p>
 105 <!-- Algorithms/Querying Algorithms//count |40 -->
 106 </div>
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