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boost_fusion/doc/html/fusion/algorithm/query/functions/none.html
Eric Niebler b0a18ff5c1 Merged revisions 42180-42235 via svnmerge from
https://svn.boost.org/svn/boost/trunk

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  r42194 | anthonyw | 2007-12-19 23:46:00 -0800 (Wed, 19 Dec 2007) | 1 line
  
  added missing parentheses
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  r42195 | anthonyw | 2007-12-20 00:37:02 -0800 (Thu, 20 Dec 2007) | 1 line
  
  added hardware_concurrency support for apple, freebsd and sun platforms
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  r42196 | niels_dekker | 2007-12-20 01:09:44 -0800 (Thu, 20 Dec 2007) | 1 line
  
  Removed "mark-expected-failures" from value_init_test, for both Borland and GCC, as value_init.hpp changeset [41942] provides a workaround for them.
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  r42202 | fmhess | 2007-12-20 06:39:53 -0800 (Thu, 20 Dec 2007) | 6 lines
  
  Made putting the name of a typedef inside
  a "classname" element successfully produce a link to the typedef's
  reference documentation, or to the typedef's synopsis if that is
  all it has.
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  r42217 | vladimir_prus | 2007-12-20 13:18:47 -0800 (Thu, 20 Dec 2007) | 1 line
  
  Explain a couple of gcc limitations with precompiled headers
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  r42220 | matias | 2007-12-20 13:56:39 -0800 (Thu, 20 Dec 2007) | 1 line
  
  add explicit std::string initialization
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  r42221 | matias | 2007-12-20 13:59:18 -0800 (Thu, 20 Dec 2007) | 1 line
  
  add license to each html page
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  r42222 | matias | 2007-12-20 14:15:11 -0800 (Thu, 20 Dec 2007) | 1 line
  
  Time out: test_bimap_property_map @ gcc-3.4.6_linux_x86_64
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  r42223 | djowel | 2007-12-20 15:24:28 -0800 (Thu, 20 Dec 2007) | 1 line
  
  Removing fusion variant adapter
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  r42224 | djowel | 2007-12-20 15:28:26 -0800 (Thu, 20 Dec 2007) | 1 line
  
  Removing fusion variant adapter
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  r42227 | nmusatti | 2007-12-20 23:03:44 -0800 (Thu, 20 Dec 2007) | 1 line
  
  Increased the latest supported version to 5.9.3, corresponding to the December 2007 update.
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  r42228 | anthonyw | 2007-12-21 02:54:59 -0800 (Fri, 21 Dec 2007) | 1 line
  
  Updated thread ID test
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  r42229 | anthonyw | 2007-12-21 03:05:37 -0800 (Fri, 21 Dec 2007) | 1 line
  
  Markup hardware_concurrency failure as expected on tru64 platforms, as support is not implemented
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  r42234 | dgregor | 2007-12-21 13:18:17 -0800 (Fri, 21 Dec 2007) | 1 line
  
  Reduce header dependencies, from Shunsuke Sogame. Fixes #1535
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[SVN r42236]
2007-12-21 22:19:06 +00:00

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<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithm.query.functions.none"></a><a href="none.html" title="none">none</a></h5></div></div></div>
<a name="fusion.algorithm.query.functions.none.description"></a><h6>
<a name="id590975"></a>
<a href="none.html#fusion.algorithm.query.functions.none.description">Description</a>
</h6>
<p>
For a sequence <tt class="computeroutput"><span class="identifier">seq</span></tt> and
unary function object <tt class="computeroutput"><span class="identifier">f</span></tt>,
<tt class="computeroutput"><span class="identifier">none</span></tt> returns true if
<tt class="computeroutput"><span class="identifier">f</span></tt> returns false for every
element of <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithm.query.functions.none.synopsis"></a><h6>
<a name="id591052"></a>
<a href="none.html#fusion.algorithm.query.functions.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">typename</span> <a href="../metafunctions/none.html" title="none"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">none</span></tt></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">none</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="id591225"></a><p class="title"><b>Table 1.41. 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>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</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">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt> is a valid expression, convertible
to <tt class="computeroutput"><span class="keyword">bool</span></tt>, for every
element <tt class="computeroutput"><span class="identifier">e</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
The sequence to search
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span></tt>
</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.none.expression_semantics"></a><h6>
<a name="id591413"></a>
<a href="none.html#fusion.algorithm.query.functions.none.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="none.html" title="none"><tt class="computeroutput"><span class="identifier">none</span></tt></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"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">bool</span></tt>
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns true if and only
if <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt>
evaluates to <tt class="computeroutput"><span class="keyword">false</span></tt> for every
element <tt class="computeroutput"><span class="identifier">e</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>. Result equivalent to <tt class="computeroutput"><span class="special">!</span><span class="identifier">any</span><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">f</span><span class="special">)</span></tt>.
</p>
<a name="fusion.algorithm.query.functions.none.complexity"></a><h6>
<a name="id591604"></a>
<a href="none.html#fusion.algorithm.query.functions.none.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.none.header"></a><h6>
<a name="id591677"></a>
<a href="none.html#fusion.algorithm.query.functions.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>
<a name="fusion.algorithm.query.functions.none.example"></a><h6>
<a name="id591828"></a>
<a href="none.html#fusion.algorithm.query.functions.none.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="none.html" title="none"><tt class="computeroutput"><span class="identifier">none</span></tt></a><span class="special">(</span><a href="../../../container/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></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>
<span class="identifier">assert</span><span class="special">(!</span><a href="none.html" title="none"><tt class="computeroutput"><span class="identifier">none</span></tt></a><span class="special">(</span><a href="../../../container/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></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>
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