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| <div class="section"> |
| <div class="titlepage"><div><div><h5 class="title"> |
| <a name="fusion.algorithm.query.functions.any"></a><a class="link" href="any.html" title="any">any</a> |
| </h5></div></div></div> |
| <a name="fusion.algorithm.query.functions.any.description"></a><h6> |
| <a name="id1002779"></a> |
| <a class="link" href="any.html#fusion.algorithm.query.functions.any.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">any</span></code> returns true if |
| <code class="computeroutput"><span class="identifier">f</span></code> returns true for at |
| least one element of <code class="computeroutput"><span class="identifier">seq</span></code>. |
| </p> |
| <a name="fusion.algorithm.query.functions.any.synopsis"></a><h6> |
| <a name="id1002832"></a> |
| <a class="link" href="any.html#fusion.algorithm.query.functions.any.synopsis">Synopsis</a> |
| </h6> |
| <pre class="programlisting"><span class="keyword">template</span><span class="special"><</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">></span> |
| <span class="keyword">typename</span> <a class="link" href="../metafunctions/any.html" title="any"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">any</span></code></a><span class="special"><</span><span class="identifier">Sequence</span><span class="special">,</span><span class="identifier">F</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">any</span><span class="special">(</span> |
| <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">F</span> <span class="identifier">f</span><span class="special">);</span> |
| </pre> |
| <div class="table"> |
| <a name="id1002967"></a><p class="title"><b>Table 1.49. Parameters</b></p> |
| <div class="table-contents"><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 class="link" 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> must be a valid expression, |
| convertible to <code class="computeroutput"><span class="keyword">bool</span></code>, |
| for each 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> |
| </div> |
| <br class="table-break"><a name="fusion.algorithm.query.functions.any.expression_semantics"></a><h6> |
| <a name="id1003128"></a> |
| <a class="link" href="any.html#fusion.algorithm.query.functions.any.expression_semantics">Expression |
| semantics</a> |
| </h6> |
| <pre class="programlisting"><a class="link" href="any.html" title="any"><code class="computeroutput"><span class="identifier">any</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 some |
| 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.any.complexity"></a><h6> |
| <a name="id1003240"></a> |
| <a class="link" href="any.html#fusion.algorithm.query.functions.any.complexity">Complexity</a> |
| </h6> |
| <p> |
| 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. |
| </p> |
| <a name="fusion.algorithm.query.functions.any.header"></a><h6> |
| <a name="id1003290"></a> |
| <a class="link" href="any.html#fusion.algorithm.query.functions.any.header">Header</a> |
| </h6> |
| <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">any</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <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">any</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| </pre> |
| <a name="fusion.algorithm.query.functions.any.example"></a><h6> |
| <a name="id1003405"></a> |
| <a class="link" href="any.html#fusion.algorithm.query.functions.any.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"><</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">></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 class="link" href="any.html" title="any"><code class="computeroutput"><span class="identifier">any</span></code></a><span class="special">(</span><a class="link" 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> |
| <span class="identifier">assert</span><span class="special">(!</span><a class="link" href="any.html" title="any"><code class="computeroutput"><span class="identifier">any</span></code></a><span class="special">(</span><a class="link" 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">2</span><span class="special">,</span><span class="number">4</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>) |
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