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<table cellpadding="2" width="100%"><tr>
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<div><div><h5 class="title">
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<a name="fusion.sequence.intrinsic.functions.swap"></a><a href="swap.html" title="swap">swap</a>
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</h5></div></div>
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<div></div>
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<a name="fusion.sequence.intrinsic.functions.swap.description"></a><h6>
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<a href="swap.html#fusion.sequence.intrinsic.functions.swap.description">Description</a>
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<a class="link" href="swap.html#fusion.sequence.intrinsic.functions.swap.description">Description</a>
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</h6>
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<p>
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Performs an element by element swap of the elements in 2 sequences.
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<a name="fusion.sequence.intrinsic.functions.swap.synopsis"></a><h6>
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<a href="swap.html#fusion.sequence.intrinsic.functions.swap.synopsis">Synopsis</a>
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<a class="link" href="swap.html#fusion.sequence.intrinsic.functions.swap.synopsis">Synopsis</a>
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</h6>
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<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Seq1</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">Seq2</span><span class="special">></span>
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<span class="keyword">void</span> <span class="identifier">swap</span><span class="special">(</span><span class="identifier">Seq1</span><span class="special">&</span> <span class="identifier">seq1</span><span class="special">,</span> <span class="identifier">Seq2</span><span class="special">&</span> <span class="identifier">seq2</span><span class="special">);</span>
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</pre>
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<a name="fusion.sequence.intrinsic.functions.swap.parameters"></a><h6>
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<a href="swap.html#fusion.sequence.intrinsic.functions.swap.parameters">Parameters</a>
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</h6>
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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><p>
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Parameters
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</p></th>
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<th><p>
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Requirement
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</p></th>
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<th><p>
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Description
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</p></th>
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</tr></thead>
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<tbody><tr>
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<td><p>
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<tt class="computeroutput"><span class="identifier">seq1</span></tt>, <tt class="computeroutput"><span class="identifier">seq2</span></tt>
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</p></td>
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<td><p>
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Models of <a href="../../concepts/forward_sequence.html" title="Forward
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Sequence">Forward
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Sequence</a>
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</p></td>
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<td><p>
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The sequences whos elements we wish to swap.
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</p></td>
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</tr></tbody>
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</table></div>
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<a name="fusion.sequence.intrinsic.functions.swap.expression_semantics"></a><h6>
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<a href="swap.html#fusion.sequence.intrinsic.functions.swap.expression_semantics">Expression
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<a class="link" href="swap.html#fusion.sequence.intrinsic.functions.swap.expression_semantics">Expression
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Semantics</a>
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</h6>
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<pre class="programlisting"><span class="identifier">swap</span><span class="special">(</span><span class="identifier">seq1</span><span class="special">,</span> <span class="identifier">seq2</span><span class="special">);</span>
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</pre>
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<p>
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<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">void</span></tt>
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</p>
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<p>
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<span class="bold"><b>Precondition</b></span>: <tt class="computeroutput"><a href="size.html" title="size"><tt class="computeroutput"><span class="identifier">size</span></tt></a><span class="special">(</span><span class="identifier">seq1</span><span class="special">)</span> <span class="special">==</span> <a href="size.html" title="size"><tt class="computeroutput"><span class="identifier">size</span></tt></a><span class="special">(</span><span class="identifier">seq2</span><span class="special">)</span></tt>
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</p>
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<p>
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<span class="bold"><b>Semantics</b></span>: Calls <tt class="computeroutput"><span class="identifier">swap</span><span class="special">(</span><span class="identifier">a1</span><span class="special">,</span> <span class="identifier">b1</span><span class="special">)</span></tt> for corresponding elements in <tt class="computeroutput"><span class="identifier">seq1</span></tt> and <tt class="computeroutput"><span class="identifier">seq2</span></tt>.
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</p>
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<p>
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/sequence/intrinsic/swap.hpp>
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</p>
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<a name="fusion.sequence.intrinsic.functions.swap.example"></a><h6>
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<a href="swap.html#fusion.sequence.intrinsic.functions.swap.example">Example</a>
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</h6>
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<pre class="programlisting"><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="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">></span> <span class="identifier">v1</span><span class="special">(</span><span class="number">1</span><span class="special">,</span> <span class="string">"hello"</span><span class="special">),</span> <span class="identifier">v2</span><span class="special">(</span><span class="number">2</span><span class="special">,</span> <span class="string">"world"</span><span class="special">);</span>
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<span class="identifier">swap</span><span class="special">(</span><span class="identifier">v1</span><span class="special">,</span> <span class="identifier">v2</span><span class="special">);</span>
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<span class="identifier">assert</span><span class="special">(</span><span class="identifier">v1</span> <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="string">"world"</span><span class="special">));</span>
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<span class="identifier">assert</span><span class="special">(</span><span class="identifier">v2</span> <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="string">"hello"</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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