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<title>reverse_view</title>
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<link rel="start" href="../../index.html" title="Chapter 1. Fusion 2.0">
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<link rel="up" href="../view.html" title="View">
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<a accesskey="p" href="transform_view.html"><img src="../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../view.html"><img src="../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../adapted.html"><img src="../../../../../../doc/html/images/next.png" alt="Next"></a>
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<div class="section" lang="en">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="fusion.view.reverse_view"></a><a href="reverse_view.html" title="reverse_view">reverse_view</a></h3></div></div></div>
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<p>
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<tt class="computeroutput"><span class="identifier">reverse_view</span></tt> presents a reversed
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view of underlying sequence. The first element will be its last and the last
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element will be its first.
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</p>
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<a name="fusion.view.reverse_view.header"></a><h4>
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<a name="id572467"></a>
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<a href="reverse_view.html#fusion.view.reverse_view.header">Header</a>
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</h4>
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<pre class="programlisting">
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<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">view</span><span class="special">/</span><span class="identifier">reverse_view</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<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">reverse_view</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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</pre>
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<a name="fusion.view.reverse_view.synopsis"></a><h4>
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<a name="id572624"></a>
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<a href="reverse_view.html#fusion.view.reverse_view.synopsis">Synopsis</a>
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</h4>
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<pre class="programlisting">
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<span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">></span>
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<span class="keyword">struct</span> <span class="identifier">reverse_view</span><span class="special">;</span>
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</pre>
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<a name="fusion.view.reverse_view.template_parameters"></a><h4>
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<a name="id572705"></a>
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<a href="reverse_view.html#fusion.view.reverse_view.template_parameters">Template parameters</a>
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</h4>
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<div class="informaltable"><table class="table">
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<colgroup>
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<col>
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<col>
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<col>
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</colgroup>
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<thead><tr>
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<th>
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<p>
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Parameter
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</p>
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</th>
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<th>
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<p>
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Description
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</p>
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</th>
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<th>
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<p>
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Default
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</p>
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</th>
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</tr></thead>
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<tbody><tr>
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<td>
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<p>
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<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
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</p>
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</td>
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<td>
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<p>
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A <a href="../sequence/concepts/bidirectional_sequence.html" title="Bidirectional
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Sequence">Bidirectional
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Sequence</a>
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</p>
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</td>
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<td>
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<p>
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</p>
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</td>
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</tr></tbody>
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</table></div>
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<a name="fusion.view.reverse_view.model_of"></a><h4>
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<a name="id572818"></a>
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<a href="reverse_view.html#fusion.view.reverse_view.model_of">Model of</a>
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</h4>
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<div class="itemizedlist"><ul type="disc"><li><a href="../sequence/concepts/bidirectional_sequence.html" title="Bidirectional
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Sequence">Bidirectional
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Sequence</a></li></ul></div>
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<div class="variablelist">
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<p class="title"><b>Notation</b></p>
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<dl>
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<dt><span class="term"><tt class="computeroutput"><span class="identifier">RV</span></tt></span></dt>
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<dd><p>
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A <tt class="computeroutput"><span class="identifier">reverse_view</span></tt> type
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</p></dd>
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<dt><span class="term"><tt class="computeroutput"><span class="identifier">s</span></tt></span></dt>
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<dd><p>
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An instance of <tt class="computeroutput"><span class="identifier">Sequence</span></tt>
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</p></dd>
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<dt><span class="term"><tt class="computeroutput"><span class="identifier">rv</span></tt>,
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<tt class="computeroutput"><span class="identifier">rv2</span></tt></span></dt>
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<dd><p>
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Instances of <tt class="computeroutput"><span class="identifier">reverse_view</span></tt>
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</p></dd>
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</dl>
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</div>
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<a name="fusion.view.reverse_view.expression_semantics"></a><h4>
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<a name="id572983"></a>
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<a href="reverse_view.html#fusion.view.reverse_view.expression_semantics">Expression
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Semantics</a>
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</h4>
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<p>
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Semantics of an expression is defined only where it differs from, or is not
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defined in <a href="../sequence/concepts/bidirectional_sequence.html" title="Bidirectional
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Sequence">Bidirectional
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Sequence</a>.
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</p>
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<div class="informaltable"><table class="table">
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<colgroup>
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<col>
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<col>
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</colgroup>
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<thead><tr>
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<th>
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<p>
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Expression
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</p>
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</th>
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<th>
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<p>
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Semantics
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</p>
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</th>
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</tr></thead>
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<tbody>
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<tr>
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<td>
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<p>
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<tt class="computeroutput"><span class="identifier">RV</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></tt>
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</p>
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</td>
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<td>
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<p>
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Creates a unary <tt class="computeroutput"><span class="identifier">reverse_view</span></tt>
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given sequence, <tt class="computeroutput"><span class="identifier">s</span></tt>.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<tt class="computeroutput"><span class="identifier">RV</span><span class="special">(</span><span class="identifier">rv</span><span class="special">)</span></tt>
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</p>
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</td>
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<td>
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<p>
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Copy constructs a <tt class="computeroutput"><span class="identifier">reverse_view</span></tt>
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from another <tt class="computeroutput"><span class="identifier">reverse_view</span></tt>,
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<tt class="computeroutput"><span class="identifier">rv</span></tt>.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<tt class="computeroutput"><span class="identifier">rv</span> <span class="special">=</span>
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<span class="identifier">rv2</span></tt>
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</p>
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</td>
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<td>
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<p>
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Assigns to a <tt class="computeroutput"><span class="identifier">reverse_view</span></tt>,
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<tt class="computeroutput"><span class="identifier">rv</span></tt>, from another
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<tt class="computeroutput"><span class="identifier">reverse_view</span></tt>, <tt class="computeroutput"><span class="identifier">rv2</span></tt>.
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</p>
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</td>
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</tr>
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</tbody>
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</table></div>
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<a name="fusion.view.reverse_view.example"></a><h4>
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<a name="id573296"></a>
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<a href="reverse_view.html#fusion.view.reverse_view.example">Example</a>
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</h4>
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<pre class="programlisting">
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<span class="keyword">typedef</span> <a href="../container/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">short</span><span class="special">,</span> <span class="keyword">double</span><span class="special">></span> <span class="identifier">vector_type</span><span class="special">;</span>
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<span class="identifier">vector_type</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">2</span><span class="special">,</span> <span class="number">5</span><span class="special">,</span> <span class="number">3.3</span><span class="special">);</span>
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<span class="identifier">reverse_view</span><span class="special"><</span><span class="identifier">vector_type</span><span class="special">></span> <span class="identifier">reverse</span><span class="special">(</span><span class="identifier">vec</span><span class="special">);</span>
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<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">reverse</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
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</pre>
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</div>
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="left"></td>
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<td align="right"><div class="copyright-footer">Copyright © 2001-2007 Joel de Guzman, Dan Marsden, Tobias
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Schwinger<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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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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</p>
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</div></td>
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</tr></table>
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<hr>
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