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boost_fusion/doc/html/fusion/algorithm/query/metafunctions/none.html
Christopher Schmidt c02a3ba001 documentation update - fixes #4281 
[SVN r62398]
2010-06-03 08:29:23 +00:00

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<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithm.query.metafunctions.none"></a><a class="link" href="none.html" title="none">none</a>
</h5></div></div></div>
<a name="fusion.algorithm.query.metafunctions.none.description"></a><h6>
<a name="id1027917"></a>
<a class="link" href="none.html#fusion.algorithm.query.metafunctions.none.description">Description</a>
</h6>
<p>
A metafunction returning the result type of <a class="link" href="../functions/none.html" title="none"><code class="computeroutput"><span class="identifier">none</span></code></a>.
</p>
<a name="fusion.algorithm.query.metafunctions.none.synopsis"></a><h6>
<a name="id1027944"></a>
<a class="link" href="none.html#fusion.algorithm.query.metafunctions.none.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">struct</span> <span class="identifier">none</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">bool</span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id1028031"></a><p class="title"><b>Table&#160;1.52.&#160;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">Sequence</span></code>
</p>
</td>
<td>
<p>
A model of <a class="link" href="../../../sequence/concepts/forward_sequence.html" title="Forward Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">F</span></code>
</p>
</td>
<td>
<p>
A model of unary <a class="link" href="../../../functional/concepts/poly.html" title="Polymorphic Function Object">Polymorphic
Function Object</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table></div>
</div>
<br class="table-break"><a name="fusion.algorithm.query.metafunctions.none.expression_semantics"></a><h6>
<a name="id1028157"></a>
<a class="link" href="none.html#fusion.algorithm.query.metafunctions.none.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting"><a class="link" href="none.html" title="none"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">none</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>
</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 the return type of
<a class="link" href="../functions/none.html" title="none"><code class="computeroutput"><span class="identifier">none</span></code></a>
given a sequence of type <code class="computeroutput"><span class="identifier">Sequence</span></code>
and a unary <a class="link" href="../../../functional/concepts/poly.html" title="Polymorphic Function Object">Polymorphic
Function Object</a> of type <code class="computeroutput"><span class="identifier">F</span></code>.
The return type is always <code class="computeroutput"><span class="keyword">bool</span></code>.
</p>
<a name="fusion.algorithm.query.metafunctions.none.complexity"></a><h6>
<a name="id1028276"></a>
<a class="link" href="none.html#fusion.algorithm.query.metafunctions.none.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithm.query.metafunctions.none.header"></a><h6>
<a name="id1028292"></a>
<a class="link" href="none.html#fusion.algorithm.query.metafunctions.none.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">none</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">none</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2001-2007 Joel de Guzman, Dan Marsden, Tobias
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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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