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<div class="titlepage"><div><div><h4 class="title">
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<a name="fusion.iterator.functions.distance"></a><a class="link" href="distance.html" title="distance">distance</a>
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</h4></div></div></div>
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<a name="fusion.iterator.functions.distance.h0"></a>
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<span><a name="fusion.iterator.functions.distance.description"></a></span><a class="link" href="distance.html#fusion.iterator.functions.distance.description">Description</a>
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Returns the distance between 2 iterators.
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<a name="fusion.iterator.functions.distance.h1"></a>
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<span><a name="fusion.iterator.functions.distance.synopsis"></a></span><a class="link" href="distance.html#fusion.iterator.functions.distance.synopsis">Synopsis</a>
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<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span>
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<span class="keyword">typename</span> <span class="identifier">I</span><span class="special">,</span>
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<span class="keyword">typename</span> <span class="identifier">J</span>
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<span class="special">></span>
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<span class="keyword">typename</span> <a class="link" href="../metafunctions/distance.html" title="distance"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">distance</span></code></a><span class="special"><</span><span class="identifier">I</span><span class="special">,</span> <span class="identifier">J</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">distance</span><span class="special">(</span><span class="identifier">I</span> <span class="keyword">const</span><span class="special">&</span> <span class="identifier">i</span><span class="special">,</span> <span class="identifier">J</span> <span class="keyword">const</span><span class="special">&</span> <span class="identifier">j</span><span class="special">);</span>
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<a name="fusion.iterator.functions.distance.t0"></a><p class="title"><b>Table 1.5. Parameters</b></p>
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<div class="table-contents"><table class="table" summary="Parameters">
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<code class="computeroutput"><span class="identifier">i</span></code>, <code class="computeroutput"><span class="identifier">j</span></code>
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Models of <a class="link" href="../concepts/forward_iterator.html" title="Forward Iterator">Forward
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Iterator</a> into the same sequence
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The start and end points of the distance to be measured
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<br class="table-break"><h6>
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<a name="fusion.iterator.functions.distance.h2"></a>
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<span><a name="fusion.iterator.functions.distance.expression_semantics"></a></span><a class="link" href="distance.html#fusion.iterator.functions.distance.expression_semantics">Expression
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<pre class="programlisting"><a class="link" href="distance.html" title="distance"><code class="computeroutput"><span class="identifier">distance</span></code></a><span class="special">(</span><span class="identifier">i</span><span class="special">,</span><span class="identifier">j</span><span class="special">);</span>
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<span class="bold"><strong>Return type</strong></span>: <code class="computeroutput"><span class="keyword">int</span></code>
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<span class="bold"><strong>Semantics</strong></span>: Returns the distance between
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iterators <code class="computeroutput"><span class="identifier">i</span></code> and <code class="computeroutput"><span class="identifier">j</span></code>.
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<a name="fusion.iterator.functions.distance.h3"></a>
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<span><a name="fusion.iterator.functions.distance.header"></a></span><a class="link" href="distance.html#fusion.iterator.functions.distance.header">Header</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">iterator</span><span class="special">/</span><span class="identifier">distance</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">distance</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<a name="fusion.iterator.functions.distance.h4"></a>
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<span><a name="fusion.iterator.functions.distance.example"></a></span><a class="link" href="distance.html#fusion.iterator.functions.distance.example">Example</a>
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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">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">></span> <span class="identifier">vec</span><span class="special">;</span>
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<span class="identifier">vec</span> <span class="identifier">v</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>
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<span class="identifier">assert</span><span class="special">(</span><a class="link" href="distance.html" title="distance"><code class="computeroutput"><span class="identifier">distance</span></code></a><span class="special">(</span><a class="link" href="../../sequence/intrinsic/functions/begin.html" title="begin"><code class="computeroutput"><span class="identifier">begin</span></code></a><span class="special">(</span><span class="identifier">v</span><span class="special">),</span> <a class="link" href="next.html" title="next"><code class="computeroutput"><span class="identifier">next</span></code></a><span class="special">(</span><a class="link" href="next.html" title="next"><code class="computeroutput"><span class="identifier">next</span></code></a><span class="special">(</span><a class="link" href="../../sequence/intrinsic/functions/begin.html" title="begin"><code class="computeroutput"><span class="identifier">begin</span></code></a><span class="special">(</span><span class="identifier">v</span><span class="special">))))</span> <span class="special">==</span> <span class="number">2</span><span class="special">);</span>
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<td align="right"><div class="copyright-footer">Copyright © 2001-2006, 2011 Joel de Guzman, Dan Marsden, Tobias
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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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