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215 lines
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<link rel="home" 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="nview.html"><img src="../../../../../../doc/html/images/next.png" alt="Next"></a>
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<div class="section" title="reverse_view">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="fusion.view.reverse_view"></a><a class="link" href="reverse_view.html" title="reverse_view">reverse_view</a>
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</h3></div></div></div>
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<p>
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<code class="computeroutput"><span class="identifier">reverse_view</span></code> 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><h5>
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<a name="id662974"></a>
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<a class="link" href="reverse_view.html#fusion.view.reverse_view.header">Header</a>
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</h5>
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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">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><h5>
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<a name="id663082"></a>
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<a class="link" href="reverse_view.html#fusion.view.reverse_view.synopsis">Synopsis</a>
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</h5>
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<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>
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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><h5>
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<a name="id663134"></a>
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<a class="link" href="reverse_view.html#fusion.view.reverse_view.template_parameters">Template parameters</a>
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</h5>
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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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<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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<code class="computeroutput"><span class="identifier">Sequence</span></code>
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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 class="link" href="../sequence/concepts/bidirectional_sequence.html" title="Bidirectional 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><h5>
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<a name="id663221"></a>
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<a class="link" href="reverse_view.html#fusion.view.reverse_view.model_of">Model of</a>
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</h5>
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<div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><a class="link" href="../sequence/concepts/bidirectional_sequence.html" title="Bidirectional Sequence">Bidirectional
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Sequence</a></li></ul></div>
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<div class="variablelist" title="Notation">
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<p class="title"><b>Notation</b></p>
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<dl>
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<dt><span class="term"><code class="computeroutput"><span class="identifier">RV</span></code></span></dt>
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<dd><p>
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A <code class="computeroutput"><span class="identifier">reverse_view</span></code> type
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</p></dd>
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<dt><span class="term"><code class="computeroutput"><span class="identifier">s</span></code></span></dt>
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<dd><p>
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An instance of <code class="computeroutput"><span class="identifier">Sequence</span></code>
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</p></dd>
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<dt><span class="term"><code class="computeroutput"><span class="identifier">rv</span></code>,
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<code class="computeroutput"><span class="identifier">rv2</span></code></span></dt>
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<dd><p>
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Instances of <code class="computeroutput"><span class="identifier">reverse_view</span></code>
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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><h5>
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<a name="id663336"></a>
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<a class="link" href="reverse_view.html#fusion.view.reverse_view.expression_semantics">Expression
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Semantics</a>
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</h5>
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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 class="link" href="../sequence/concepts/bidirectional_sequence.html" title="Bidirectional 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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<code class="computeroutput"><span class="identifier">RV</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></code>
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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 <code class="computeroutput"><span class="identifier">reverse_view</span></code>
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given sequence, <code class="computeroutput"><span class="identifier">s</span></code>.
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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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<code class="computeroutput"><span class="identifier">RV</span><span class="special">(</span><span class="identifier">rv</span><span class="special">)</span></code>
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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 <code class="computeroutput"><span class="identifier">reverse_view</span></code>
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from another <code class="computeroutput"><span class="identifier">reverse_view</span></code>,
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<code class="computeroutput"><span class="identifier">rv</span></code>.
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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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<code class="computeroutput"><span class="identifier">rv</span> <span class="special">=</span>
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<span class="identifier">rv2</span></code>
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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 <code class="computeroutput"><span class="identifier">reverse_view</span></code>,
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<code class="computeroutput"><span class="identifier">rv</span></code>, from another
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<code class="computeroutput"><span class="identifier">reverse_view</span></code>, <code class="computeroutput"><span class="identifier">rv2</span></code>.
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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><h5>
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<a name="id663560"></a>
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<a class="link" href="reverse_view.html#fusion.view.reverse_view.example">Example</a>
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</h5>
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<pre class="programlisting"><span class="keyword">typedef</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">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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