forked from boostorg/fusion
merge from trunk
[SVN r61189]
This commit is contained in:
Christopher Schmidt
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<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
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<title>count</title>
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<link rel="stylesheet" href="../../../../../../../../doc/html/boostbook.css" type="text/css">
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<meta name="generator" content="DocBook XSL Stylesheets V1.75.0">
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<meta name="generator" content="DocBook XSL Stylesheets V1.75.1">
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<link rel="home" href="../../../../index.html" title="Chapter 1. Fusion 2.0">
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<link rel="up" href="../functions.html" title="Functions">
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<link rel="prev" href="find_if.html" title="find_if">
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@ -27,14 +27,14 @@
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<a name="fusion.algorithm.query.functions.count"></a><a class="link" href="count.html" title="count">count</a>
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</h5></div></div></div>
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<a name="fusion.algorithm.query.functions.count.description"></a><h6>
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<a name="id709800"></a>
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<a name="id813392"></a>
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<a class="link" href="count.html#fusion.algorithm.query.functions.count.description">Description</a>
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</h6>
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<p>
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Returns the number of elements of a given type within a sequence.
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</p>
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<a name="fusion.algorithm.query.functions.count.synopsis"></a><h6>
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<a name="id709817"></a>
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<a name="id813409"></a>
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<a class="link" href="count.html#fusion.algorithm.query.functions.count.synopsis">Synopsis</a>
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</h6>
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<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span>
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@ -45,7 +45,7 @@
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<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">T</span> <span class="keyword">const</span><span class="special">&</span> <span class="identifier">t</span><span class="special">);</span>
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</pre>
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<div class="table">
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<a name="id709962"></a><p class="title"><b>Table 1.48. Parameters</b></p>
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<a name="id813554"></a><p class="title"><b>Table 1.48. Parameters</b></p>
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<div class="table-contents"><table class="table" summary="Parameters">
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<colgroup>
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<col>
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</colgroup>
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<thead><tr>
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<th>
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<p>
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Parameter
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</p>
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</th>
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<p>
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Parameter
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</p>
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</th>
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<th>
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<p>
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Requirement
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</p>
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</th>
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<p>
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Requirement
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</p>
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</th>
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<th>
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<p>
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Description
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</p>
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</th>
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<p>
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Description
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</p>
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</th>
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</tr></thead>
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<tbody>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">seq</span></code>
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</p>
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</td>
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<p>
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<code class="computeroutput"><span class="identifier">seq</span></code>
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</p>
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</td>
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<td>
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<p>
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A model of <a class="link" href="../../../sequence/concepts/forward_sequence.html" title="Forward Sequence">Forward
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Sequence</a>, <code class="computeroutput"><span class="identifier">e</span> <span class="special">==</span> <span class="identifier">t</span></code>
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must be a valid expression, convertible to <code class="computeroutput"><span class="keyword">bool</span></code>,
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for each element <code class="computeroutput"><span class="identifier">e</span></code>
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in <code class="computeroutput"><span class="identifier">seq</span></code>
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</p>
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</td>
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<p>
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A model of <a class="link" href="../../../sequence/concepts/forward_sequence.html" title="Forward Sequence">Forward
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Sequence</a>, <code class="computeroutput"><span class="identifier">e</span>
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<span class="special">==</span> <span class="identifier">t</span></code>
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must be a valid expression, convertible to <code class="computeroutput"><span class="keyword">bool</span></code>,
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for each element <code class="computeroutput"><span class="identifier">e</span></code>
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in <code class="computeroutput"><span class="identifier">seq</span></code>
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</p>
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</td>
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<td>
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<p>
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The sequence to search
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</p>
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</td>
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<p>
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The sequence to search
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<code class="computeroutput"><span class="identifier">T</span></code>
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</p>
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</td>
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<p>
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<code class="computeroutput"><span class="identifier">T</span></code>
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</p>
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</td>
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<td>
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<p>
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Any type
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</p>
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</td>
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<p>
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Any type
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</p>
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</td>
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<td>
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<p>
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The type to count
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</p>
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</td>
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<p>
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The type to count
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</p>
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</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<br class="table-break"><a name="fusion.algorithm.query.functions.count.expression_semantics"></a><h6>
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<a name="id710117"></a>
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<a name="id813716"></a>
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<a class="link" href="count.html#fusion.algorithm.query.functions.count.expression_semantics">Expression
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Semantics</a>
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</h6>
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@ -127,21 +128,21 @@
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<code class="computeroutput"><span class="identifier">t</span></code> in <code class="computeroutput"><span class="identifier">seq</span></code>.
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</p>
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<a name="fusion.algorithm.query.functions.count.complexity"></a><h6>
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<a name="id710211"></a>
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<a name="id813809"></a>
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<a class="link" href="count.html#fusion.algorithm.query.functions.count.complexity">Complexity</a>
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</h6>
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<p>
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Linear. At most <code class="computeroutput"><a class="link" href="../../../sequence/intrinsic/metafunctions/size.html" title="size"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></code></a><span class="special"><</span><span class="identifier">Sequence</span><span class="special">>::</span><span class="identifier">value</span></code> comparisons.
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</p>
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<a name="fusion.algorithm.query.functions.count.header"></a><h6>
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<a name="id710261"></a>
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<a name="id813860"></a>
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<a class="link" href="count.html#fusion.algorithm.query.functions.count.header">Header</a>
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</h6>
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<pre class="programlisting"><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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<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">include</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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<a name="fusion.algorithm.query.functions.count.example"></a><h6>
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<a name="id710376"></a>
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<a name="id813975"></a>
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<a class="link" href="count.html#fusion.algorithm.query.functions.count.example">Example</a>
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</h6>
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<pre class="programlisting"><span class="keyword">const</span> <a class="link" href="../../../container/vector.html" title="vector"><code class="computeroutput"><span class="identifier">vector</span></code></a><span class="special"><</span><span class="keyword">double</span><span class="special">,</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">></span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1.0</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">);</span>
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