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<h6>
<a name="fusion.algorithm.transformation.functions.filter.h0"></a>
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<p>
For a given sequence, filter returns a new sequences containing only
</p>
<h6>
<a name="fusion.algorithm.transformation.functions.filter.h1"></a>
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<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span>
<span class="keyword">typename</span> <span class="identifier">T</span><span class="special">,</span>
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<a name="fusion.algorithm.transformation.functions.filter.h2"></a>
- <span><a name="fusion.algorithm.transformation.functions.filter.expression_semantics"></a></span><a class="link" href="filter.html#fusion.algorithm.transformation.functions.filter.expression_semantics">Expression
+ <span class="phrase"><a name="fusion.algorithm.transformation.functions.filter.expression_semantics"></a></span><a class="link" href="filter.html#fusion.algorithm.transformation.functions.filter.expression_semantics">Expression
Semantics</a>
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<pre class="programlisting"><a class="link" href="filter.html" title="filter"><code class="computeroutput"><span class="identifier">filter</span></code></a><span class="special"><</span><span class="identifier">T</span><span class="special">>(</span><span class="identifier">seq</span><span class="special">);</span>
<p>
<span class="bold"><strong>Return type</strong></span>:
</p>
-<div class="itemizedlist"><ul class="itemizedlist" type="disc">
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
A model of <a class="link" href="../../../sequence/concepts/forward_sequence.html" title="Forward Sequence">Forward
Sequence</a>.
</p>
<h6>
<a name="fusion.algorithm.transformation.functions.filter.h3"></a>
- <span><a name="fusion.algorithm.transformation.functions.filter.complexity"></a></span><a class="link" href="filter.html#fusion.algorithm.transformation.functions.filter.complexity">Complexity</a>
+ <span class="phrase"><a name="fusion.algorithm.transformation.functions.filter.complexity"></a></span><a class="link" href="filter.html#fusion.algorithm.transformation.functions.filter.complexity">Complexity</a>
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<p>
Constant. Returns a view which is lazily evaluated.
</p>
<h6>
<a name="fusion.algorithm.transformation.functions.filter.h4"></a>
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<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">transformation</span><span class="special">/</span><span class="identifier">filter</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">filter</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
</pre>
<h6>
<a name="fusion.algorithm.transformation.functions.filter.h5"></a>
- <span><a name="fusion.algorithm.transformation.functions.filter.example"></a></span><a class="link" href="filter.html#fusion.algorithm.transformation.functions.filter.example">Example</a>
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</h6>
<pre class="programlisting"><span class="keyword">const</span> <a class="link" href="../../../container/vector.html" title="vector"><code class="computeroutput"><span class="identifier">vector</span></code></a><span class="special"><</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">long</span><span class="special">,</span><span class="keyword">long</span><span class="special">></span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1</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="number">4</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a class="link" href="filter.html" title="filter"><code class="computeroutput"><span class="identifier">filter</span></code></a><span class="special"><</span><span class="keyword">int</span><span class="special">>(</span><span class="identifier">vec</span><span class="special">)</span> <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>