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[SVN r56179]
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Joel de Guzman
2009-09-14 07:47:53 +00:00
parent 2f8b91828b
commit 2e805be6df
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doc/html/fusion/algorithm/query/functions/count.html
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@ -3,10 +3,10 @@
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>count</title>
<link rel="stylesheet" href="../../../../../../../../doc/html/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
<meta name="generator" content="DocBook XSL Stylesheets V1.65.1">
<link rel="home" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
<link rel="up" href="../functions.html" title="Functions">
<link rel="prev" href="find_if.html" title="find_if">
<link rel="previous" href="find_if.html" title="find_if">
<link rel="next" href="count_if.html" title="count_if">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
@ -23,21 +23,24 @@
<a accesskey="p" href="find_if.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="count_if.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithm.query.functions.count"></a><a href="count.html" title="count">count</a></h5></div></div></div>
<div class="titlepage">
<div><div><h5 class="title">
<a name="fusion.algorithm.query.functions.count"></a><a href="count.html" title="count">count</a>
</h5></div></div>
<div></div>
</div>
<a name="fusion.algorithm.query.functions.count.description"></a><h6>
<a name="id594273"></a>
<a name="id548586"></a>
<a href="count.html#fusion.algorithm.query.functions.count.description">Description</a>
</h6>
<p>
Returns the number of elements of a given type within a sequence.
</p>
<a name="fusion.algorithm.query.functions.count.synopsis"></a><h6>
<a name="id594303"></a>
<a name="id548614"></a>
<a href="count.html#fusion.algorithm.query.functions.count.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span>
<span class="special">&gt;</span>
@ -45,7 +48,7 @@
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">T</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">t</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id594507"></a><p class="title"><b>Table<EFBFBD>1.44.<2E>Parameters</b></p>
<a name="id548815"></a><p class="title"><b>Table<EFBFBD>1.44.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
@ -53,72 +56,53 @@
<col>
</colgroup>
<thead><tr>
<th>
<p>
<th><p>
Parameter
</p>
</th>
<th>
<p>
</p></th>
<th><p>
Requirement
</p>
</th>
<th>
<p>
</p></th>
<th><p>
Description
</p>
</th>
</p></th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<td><p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
</p></td>
<td><p>
A model of <a href="../../../sequence/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>, <tt class="computeroutput"><span class="identifier">e</span> <span class="special">==</span> <span class="identifier">t</span></tt>
must be a valid expression, convertible to <tt class="computeroutput"><span class="keyword">bool</span></tt>,
for each element <tt class="computeroutput"><span class="identifier">e</span></tt>
in <tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
</p></td>
<td><p>
The sequence to search
</p>
</td>
</p></td>
</tr>
<tr>
<td>
<p>
<td><p>
<tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
</p></td>
<td><p>
Any type
</p>
</td>
<td>
<p>
</p></td>
<td><p>
The type to count
</p>
</td>
</p></td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithm.query.functions.count.expression_semantics"></a><h6>
<a name="id594700"></a>
<a name="id549006"></a>
<a href="count.html#fusion.algorithm.query.functions.count.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="count.html" title="count"><tt class="computeroutput"><span class="identifier">count</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">t</span><span class="special">);</span>
<pre class="programlisting"><a href="count.html" title="count"><tt class="computeroutput"><span class="identifier">count</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">t</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">int</span></tt>
@ -129,26 +113,24 @@
<tt class="computeroutput"><span class="identifier">t</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithm.query.functions.count.complexity"></a><h6>
<a name="id594838"></a>
<a name="id549142"></a>
<a href="count.html#fusion.algorithm.query.functions.count.complexity">Complexity</a>
</h6>
<p>
Linear. At most <tt class="computeroutput"><a href="../../../sequence/intrinsic/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> comparisons.
</p>
<a name="fusion.algorithm.query.functions.count.header"></a><h6>
<a name="id594919"></a>
<a name="id549220"></a>
<a href="count.html#fusion.algorithm.query.functions.count.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span>
<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span>
<span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span>
</pre>
<a name="fusion.algorithm.query.functions.count.example"></a><h6>
<a name="id595085"></a>
<a name="id549383"></a>
<a href="count.html#fusion.algorithm.query.functions.count.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">const</span> <a href="../../../container/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</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">&gt;</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>
<pre class="programlisting"><span class="keyword">const</span> <a href="../../../container/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</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">&gt;</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>
<span class="identifier">assert</span><span class="special">(</span><a href="count.html" title="count"><tt class="computeroutput"><span class="identifier">count</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">,</span><span class="number">2</span><span class="special">)</span> <span class="special">==</span> <span class="number">1</span><span class="special">);</span>
</pre>
</div>