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| <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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| <div class="section" id="contains"> |
| <h1><a class="toc-backref" href="./querying-algorithms.html#id1477">contains</a></h1> |
| <div class="section" id="id551"> |
| <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3> |
| <pre class="literal-block"> |
| template< |
| typename Sequence |
| , typename T |
| > |
| struct <a href="./contains.html" class="identifier">contains</a> |
| { |
| typedef <em>unspecified</em> type; |
| }; |
| </pre> |
| </div> |
| <div class="section" id="id552"> |
| <h3><a class="subsection-title" href="#description" name="description">Description</a></h3> |
| <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> |
| are identical to <tt class="literal"><span class="pre">T</span></tt>.</p> |
| </div> |
| <div class="section" id="id553"> |
| <h3><a class="subsection-title" href="#header" name="header">Header</a></h3> |
| <pre class="literal-block"> |
| #include <<a href="../../../../boost/mpl/contains.hpp" class="header">boost/mpl/contains.hpp</a>> |
| </pre> |
| </div> |
| <div class="section" id="id554"> |
| <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3> |
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| <tr><th class="head">Parameter</th> |
| <th class="head">Requirement</th> |
| <th class="head">Description</th> |
| </tr> |
| </thead> |
| <tbody valign="top"> |
| <tr><td><tt class="literal"><span class="pre">Sequence</span></tt></td> |
| <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td> |
| <td>A sequence to be examined.</td> |
| </tr> |
| <tr><td><tt class="literal"><span class="pre">T</span></tt></td> |
| <td>Any type</td> |
| <td>A type to search for.</td> |
| </tr> |
| </tbody> |
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| <div class="section" id="id555"> |
| <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3> |
| <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> |
| <pre class="literal-block"> |
| typedef <a href="./contains.html" class="identifier">contains</a><s,t>::type r; |
| </pre> |
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| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <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> |
| </td> |
| </tr> |
| <tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><p class="first">Equivalent to</p> |
| <pre class="last literal-block"> |
| typedef <a href="./not.html" class="identifier">not_</a>< is_same< |
| <a href="./find.html" class="identifier">find</a><s,t>::type |
| , <a href="./end.html" class="identifier">end</a><s>::type |
| > >::type r; |
| </pre> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <div class="section" id="id556"> |
| <h3><a class="subsection-title" href="#complexity" name="complexity">Complexity</a></h3> |
| <p>Linear. At most <tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a><s>::value</span></tt> comparisons for identity.</p> |
| </div> |
| <div class="section" id="id557"> |
| <h3><a class="subsection-title" href="#example" name="example">Example</a></h3> |
| <pre class="literal-block"> |
| typedef <a href="./vector.html" class="identifier">vector</a><char,int,unsigned,long,unsigned long> types; |
| <a href="./assert-not.html" class="identifier">BOOST_MPL_ASSERT_NOT</a>(( <a href="./contains.html" class="identifier">contains</a><types,bool> )); |
| </pre> |
| </div> |
| <div class="section" id="id558"> |
| <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3> |
| <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> |
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