2006-08-22 15:57:13 +00:00
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<div class="titlepage"><div><div><h5 class="title">
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<a name="fusion.algorithms.query.metafunctions.count"></a><a href="count.html" title="count">count</a></h5></div></div></div>
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<a name="fusion.algorithms.query.metafunctions.count.description"></a><h6>
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2006-09-21 12:43:48 +00:00
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<a name="id567705"></a>
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2006-08-22 15:57:13 +00:00
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<a href="count.html#fusion.algorithms.query.metafunctions.count.description">Description</a>
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</h6>
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<p>
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A metafunction that returns the result type of <tt class="computeroutput"><span class="identifier">count</span></tt>
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given the sequence and search types.
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</p>
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<a name="fusion.algorithms.query.metafunctions.count.synopsis"></a><h6>
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2006-09-21 12:43:48 +00:00
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<a name="id567748"></a>
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2006-08-22 15:57:13 +00:00
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<a href="count.html#fusion.algorithms.query.metafunctions.count.synopsis">Synopsis</a>
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</h6>
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<pre class="programlisting">
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<span class="keyword">template</span><span class="special"><</span>
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<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
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<span class="keyword">typename</span> <span class="identifier">T</span>
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<span class="special">></span>
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<span class="keyword">struct</span> <span class="identifier">count</span>
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<span class="special">{</span>
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<span class="keyword">typedef</span> <span class="keyword">int</span> <span class="identifier">type</span><span class="special">;</span>
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<span class="special">};</span>
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</pre>
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<div class="informaltable">
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<h4>
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2006-09-21 12:43:48 +00:00
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<a name="id567872"></a>
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2006-08-22 15:57:13 +00:00
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<span class="table-title">Parameters</span>
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</h4>
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<table class="table">
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<colgroup>
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<col>
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<col>
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<col>
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</colgroup>
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<thead><tr>
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<th>Parameter</th>
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<th>Requirement</th>
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<th>heading
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Description</th>
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</tr></thead>
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<tbody>
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<tr>
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<td><tt class="computeroutput"><span class="identifier">Sequence</span></tt></td>
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<td>A
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model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
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Sequence">Forward
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Sequence</a>
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</td>
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<td>Operation's argument</td>
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</tr>
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<tr>
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<td><tt class="computeroutput"><span class="identifier">T</span></tt></td>
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<td>Any
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type</td>
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<td>Operation's argument</td>
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</tr>
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</tbody>
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</table>
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</div>
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<a name="fusion.algorithms.query.metafunctions.count.expression_semantics"></a><h6>
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2006-09-21 12:43:48 +00:00
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<a name="id567972"></a>
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2006-08-22 15:57:13 +00:00
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<a href="count.html#fusion.algorithms.query.metafunctions.count.expression_semantics">Expression
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Semantics</a>
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</h6>
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<pre class="programlisting">
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<a href="count.html" title="count"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">count</span></tt></a><span class="special"><</span><span class="identifier">T</span><span class="special">>::</span><span class="identifier">type</span>
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</pre>
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<p>
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<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">int</span></tt>.
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</p>
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<p>
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<span class="bold"><b>Semantics</b></span>: Returns the return type of
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<a href="../functions/count.html" title="count"><tt class="computeroutput"><span class="identifier">count</span></tt></a>. The return type is always
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<tt class="computeroutput"><span class="keyword">int</span></tt>.
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</p>
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<a name="fusion.algorithms.query.metafunctions.count.complexity"></a><h6>
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2006-09-21 12:43:48 +00:00
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<a name="id568110"></a>
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2006-08-22 15:57:13 +00:00
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<a href="count.html#fusion.algorithms.query.metafunctions.count.complexity">Complexity</a>
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</h6>
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<p>
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Constant.
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</p>
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<a name="fusion.algorithms.query.metafunctions.count.header"></a><h6>
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2006-09-21 12:43:48 +00:00
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<a name="id568140"></a>
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2006-08-22 15:57:13 +00:00
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<a href="count.html#fusion.algorithms.query.metafunctions.count.header">Header</a>
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</h6>
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<pre class="programlisting">
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">count</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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</pre>
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</div>
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="left"></td>
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<td align="right"><small>Copyright <20> 2001-2005 Joel de Guzman, Dan Marsden</small></td>
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</tr></table>
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<hr>
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<a accesskey="p" href="find_if.html"><img src="../../../../images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../images/home.png" alt="Home"></a><a accesskey="n" href="count_if.html"><img src="../../../../images/next.png" alt="Next"></a>
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