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boost_fusion/doc/html/fusion/algorithm/query/functions/all.html
Tobias Schwinger aaf89a67a6 updates functional module: only two unfused variants, now 
[SVN r51381]
2009-02-22 06:27:12 +00:00

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<title>all</title>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithm.query.functions.all"></a><a href="all.html" title="all">all</a></h5></div></div></div>
<a name="fusion.algorithm.query.functions.all.description"></a><h6>
<a name="id1174004"></a>
<a href="all.html#fusion.algorithm.query.functions.all.description">Description</a>
</h6>
<p>
For a sequence <code class="computeroutput"><span class="identifier">seq</span></code> and
unary function object <code class="computeroutput"><span class="identifier">f</span></code>,
<code class="computeroutput"><span class="identifier">all</span></code> returns true if
<code class="computeroutput"><span class="identifier">f</span></code> returns true for every
element of <code class="computeroutput"><span class="identifier">seq</span></code>.
</p>
<a name="fusion.algorithm.query.functions.all.synopsis"></a><h6>
<a name="id1174069"></a>
<a href="all.html#fusion.algorithm.query.functions.all.synopsis">Synopsis</a>
</h6>
<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">F</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/all.html" title="all"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">all</span></code></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span><span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">all</span><span class="special">(</span>
<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">F</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id1174220"></a><p class="title"><b>Table 1.40. Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">seq</span></code>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequence/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>, <code class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></code> is a valid expression, convertible
to <code class="computeroutput"><span class="keyword">bool</span></code>, for every
element <code class="computeroutput"><span class="identifier">e</span></code> in <code class="computeroutput"><span class="identifier">seq</span></code>
</p>
</td>
<td>
<p>
The sequence to search
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">f</span></code>
</p>
</td>
<td>
<p>
A unary function object
</p>
</td>
<td>
<p>
The search predicate
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithm.query.functions.all.expression_semantics"></a><h6>
<a name="id1174382"></a>
<a href="all.html#fusion.algorithm.query.functions.all.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting"><a href="all.html" title="all"><code class="computeroutput"><span class="identifier">all</span></code></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><strong>Return type</strong></span>: <code class="computeroutput"><span class="keyword">bool</span></code>
</p>
<p>
<span class="bold"><strong>Semantics</strong></span>: Returns true if and only
if <code class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></code>
evaluates to <code class="computeroutput"><span class="keyword">true</span></code> for every
element <code class="computeroutput"><span class="identifier">e</span></code> in <code class="computeroutput"><span class="identifier">seq</span></code>.
</p>
<a name="fusion.algorithm.query.functions.all.complexity"></a><h6>
<a name="id1174511"></a>
<a href="all.html#fusion.algorithm.query.functions.all.complexity">Complexity</a>
</h6>
<p>
Linear. At most <code class="computeroutput"><a 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">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></code> comparisons.
</p>
<a name="fusion.algorithm.query.functions.all.header"></a><h6>
<a name="id1174572"></a>
<a href="all.html#fusion.algorithm.query.functions.all.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">all</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">all</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithm.query.functions.all.example"></a><h6>
<a name="id1174704"></a>
<a href="all.html#fusion.algorithm.query.functions.all.example">Example</a>
</h6>
<pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">odd</span>
<span class="special">{</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">T</span> <span class="identifier">t</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">t</span> <span class="special">%</span> <span class="number">2</span><span class="special">;</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="special">...</span>
<span class="identifier">assert</span><span class="special">(</span><a href="all.html" title="all"><code class="computeroutput"><span class="identifier">all</span></code></a><span class="special">(</span><a href="../../../container/generation/functions/make_vector.html" title="make_vector"><code class="computeroutput"><span class="identifier">make_vector</span></code></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">3</span><span class="special">),</span> <span class="identifier">odd</span><span class="special">()));</span>
<span class="identifier">assert</span><span class="special">(!</span><a href="all.html" title="all"><code class="computeroutput"><span class="identifier">all</span></code></a><span class="special">(</span><a href="../../../container/generation/functions/make_vector.html" title="make_vector"><code class="computeroutput"><span class="identifier">make_vector</span></code></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">),</span> <span class="identifier">odd</span><span class="special">()));</span>
</pre>
</div>
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<td align="right"><div class="copyright-footer">Copyright © 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p>
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