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<div><div><h5 class="title">
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<a name="fusion.container.generation.functions.map_tie"></a><a href="map_tie.html" title="map_tie">map_tie</a>
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<a name="fusion.container.generation.functions.map_tie.description"></a><h6>
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<a href="map_tie.html#fusion.container.generation.functions.map_tie.description">Description</a>
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</h6>
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<p>
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Constructs a tie using a <a href="../../map.html" title="map"><tt class="computeroutput"><span class="identifier">map</span></tt></a> sequence.
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<a name="fusion.container.generation.functions.map_tie.synopsis"></a><h6>
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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">K0</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">K1</span><span class="special">,...</span> <span class="keyword">typename</span> <span class="identifier">KN</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">D0</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">D1</span><span class="special">,...</span> <span class="keyword">typename</span> <span class="identifier">DN</span><span class="special">></span>
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<a href="../../map.html" title="map"><tt class="computeroutput"><span class="identifier">map</span></tt></a><span class="special"><</span><a href="../../../support/pair.html" title="pair"><tt class="computeroutput"><span class="identifier">pair</span></tt></a><span class="special"><</span><span class="identifier">K0</span><span class="special">,</span> <span class="identifier">D0</span><span class="special">&>,</span> <a href="../../../support/pair.html" title="pair"><tt class="computeroutput"><span class="identifier">pair</span></tt></a><span class="special"><</span><span class="identifier">K1</span><span class="special">,</span> <span class="identifier">D1</span><span class="special">&>,...</span> <a href="../../../support/pair.html" title="pair"><tt class="computeroutput"><span class="identifier">pair</span></tt></a><span class="special"><</span><span class="identifier">KN</span><span class="special">,</span> <span class="identifier">DN</span><span class="special">&></span> <span class="special">></span>
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<span class="identifier">map_tie</span><span class="special">(</span><span class="identifier">D0</span><span class="special">&</span> <span class="identifier">d0</span><span class="special">,</span> <span class="identifier">D1</span><span class="special">&</span> <span class="identifier">d1</span><span class="special">...</span> <span class="identifier">DN</span><span class="special">&</span> <span class="identifier">dN</span><span class="special">);</span>
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</pre>
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<p>
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The variadic function accepts <tt class="computeroutput"><span class="number">0</span></tt>
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to <tt class="computeroutput"><span class="identifier">FUSION_MAX_MAP_SIZE</span></tt>
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elements, where <tt class="computeroutput"><span class="identifier">FUSION_MAX_MAP_SIZE</span></tt>
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is a user definable predefined maximum that defaults to <tt class="computeroutput"><span class="number">10</span></tt>, and a corresponding number of key types.
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You may define the preprocessor constant <tt class="computeroutput"><span class="identifier">FUSION_MAX_MAP_SIZE</span></tt>
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before including any Fusion header to change the default. Example:
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</p>
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<pre class="programlisting"><span class="preprocessor">#define</span> <span class="identifier">FUSION_MAX_MAP_SIZE</span> <span class="number">20</span>
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</pre>
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<a name="fusion.container.generation.functions.map_tie.parameters"></a><h6>
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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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Parameter
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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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<td><p>
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<tt class="computeroutput"><span class="identifier">K0</span><span class="special">,</span>
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<span class="identifier">K1</span><span class="special">,...</span>
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<span class="identifier">KN</span></tt>
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<td><p>
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Any type
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</p></td>
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<td><p>
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The key types associated with each of the <tt class="computeroutput"><span class="identifier">x1</span><span class="special">,</span><span class="identifier">x2</span><span class="special">,...,</span><span class="identifier">xN</span></tt>
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values
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</p></td>
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<tr>
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<td><p>
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<tt class="computeroutput"><span class="identifier">x0</span><span class="special">,</span>
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<span class="identifier">x1</span><span class="special">,...</span>
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<span class="identifier">xN</span></tt>
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</p></td>
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<td><p>
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Instances of <tt class="computeroutput"><span class="identifier">T0</span><span class="special">,</span> <span class="identifier">T1</span><span class="special">,...</span> <span class="identifier">TN</span></tt>
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<td><p>
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The arguments to <tt class="computeroutput"><span class="identifier">map_tie</span></tt>
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<a name="fusion.container.generation.functions.map_tie.expression_semantics"></a><h6>
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</h6>
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<pre class="programlisting"><span class="identifier">map_tie</span><span class="special"><</span><span class="identifier">K0</span><span class="special">,</span> <span class="identifier">K1</span><span class="special">,...</span> <span class="identifier">KN</span><span class="special">>(</span><span class="identifier">x0</span><span class="special">,</span> <span class="identifier">x1</span><span class="special">,...</span> <span class="identifier">xN</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>: <a href="../../map.html" title="map"><tt class="computeroutput"><span class="identifier">map</span></tt></a><<a href="../../../support/pair.html" title="pair"><tt class="computeroutput"><span class="identifier">pair</span></tt></a><K0, D0&>, <a href="../../../support/pair.html" title="pair"><tt class="computeroutput"><span class="identifier">pair</span></tt></a><K1,
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D1&>,... <a href="../../../support/pair.html" title="pair"><tt class="computeroutput"><span class="identifier">pair</span></tt></a><KN,
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DN&> >
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</p>
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<p>
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<span class="bold"><b>Semantics</b></span>: Create a <a href="../../map.html" title="map"><tt class="computeroutput"><span class="identifier">map</span></tt></a> of references from <tt class="computeroutput"><span class="identifier">x0</span><span class="special">,</span> <span class="identifier">x1</span><span class="special">,...</span> <span class="identifier">xN</span></tt> with keys <tt class="computeroutput"><span class="identifier">K0</span><span class="special">,</span> <span class="identifier">K1</span><span class="special">,...</span> <span class="identifier">KN</span></tt>
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</h6>
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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">container</span><span class="special">/</span><span class="identifier">generation</span><span class="special">/</span><span class="identifier">map_tie</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">map_tie</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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</h6>
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<pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">int_key</span><span class="special">;</span>
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<span class="keyword">struct</span> <span class="identifier">double_key</span><span class="special">;</span>
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<span class="special">...</span>
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<span class="keyword">int</span> <span class="identifier">i</span> <span class="special">=</span> <span class="number">123</span><span class="special">;</span>
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<span class="keyword">double</span> <span class="identifier">d</span> <span class="special">=</span> <span class="number">123.456</span><span class="special">;</span>
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<span class="identifier">map_tie</span><span class="special"><</span><span class="identifier">int_key</span><span class="special">,</span> <span class="identifier">double_key</span><span class="special">>(</span><span class="identifier">i</span><span class="special">,</span> <span class="identifier">d</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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<hr>
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<div class="spirit-nav">
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<a accesskey="p" href="vector_tie.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.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="../metafunctions.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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