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138 lines
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<meta name="generator" content="DocBook XSL Stylesheets V1.68.1">
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<link rel="start" href="../../../index.html" title="Chapter 1. Fusion 2.0">
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<link rel="up" href="../functions.html" title="Functions">
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<a accesskey="p" href="deref.html"><img src="../../../images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../images/home.png" alt="Home"></a><a accesskey="n" href="prior.html"><img src="../../../images/next.png" alt="Next"></a>
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</div>
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<div class="section" lang="en">
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<div class="titlepage"><div><div><h4 class="title">
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<a name="fusion.iterators.functions.next"></a><a href="next.html" title="next">next</a></h4></div></div></div>
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<a name="fusion.iterators.functions.next.description"></a><h5>
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<a name="id939530"></a>
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<a href="next.html#fusion.iterators.functions.next.description">Description</a>
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</h5>
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<p>
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Moves an iterator 1 position forwards.
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</p>
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<a name="fusion.iterators.functions.next.synopsis"></a><h5>
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<a name="id939557"></a>
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<a href="next.html#fusion.iterators.functions.next.synopsis">Synopsis</a>
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</h5>
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<pre class="programlisting">
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<span class="keyword">template</span><span class="special"><</span>
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<span class="keyword">typename</span> <span class="identifier">I</span>
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<span class="special">></span>
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<span class="keyword">typename</span> <a href="../metafunctions/next.html" title="next"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">next</span></code></a><span class="special"><</span><span class="identifier">I</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">next</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>
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</pre>
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<div class="table">
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<a name="id939684"></a><p class="title"><b>Table 1.3. Parameters</b></p>
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<table class="table" summary="Parameters">
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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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Requirement
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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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</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">i</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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Model of <a href="../concepts/forward_iterator.html" title="Forward
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Iterator">Forward
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Iterator</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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Operation's argument
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</p>
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</td>
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</tr></tbody>
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</table>
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</div>
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<a name="fusion.iterators.functions.next.expression_semantics"></a><h5>
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<a name="id939775"></a>
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<a href="next.html#fusion.iterators.functions.next.expression_semantics">Expression
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Semantics</a>
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</h5>
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<pre class="programlisting">
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<span class="identifier">next</span><span class="special">(</span><span class="identifier">i</span><span class="special">);</span>
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</pre>
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<p>
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<span class="bold"><strong>Return type</strong></span>: A model of the same iterator
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concept as <code class="computeroutput"><span class="identifier">i</span></code>.
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</p>
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<p>
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<span class="bold"><strong>Semantics</strong></span>: Returns an iterator to the
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next element after <code class="computeroutput"><span class="identifier">i</span></code>.
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</p>
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<a name="fusion.iterators.functions.next.header"></a><h5>
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<a name="id939864"></a>
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<a href="next.html#fusion.iterators.functions.next.header">Header</a>
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</h5>
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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">iterator</span><span class="special">/</span><span class="identifier">next</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.iterators.functions.next.example"></a><h5>
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<a name="id939948"></a>
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<a href="next.html#fusion.iterators.functions.next.example">Example</a>
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</h5>
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<pre class="programlisting">
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<span class="keyword">typedef</span> <a href="../../sequences/containers/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 href="deref.html" title="deref"><code class="computeroutput"><span class="identifier">deref</span></code></a><span class="special">(</span><a href="../../sequences/intrinsics/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">1</span><span class="special">);</span>
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<span class="identifier">assert</span><span class="special">(</span><a href="deref.html" title="deref"><code class="computeroutput"><span class="identifier">deref</span></code></a><span class="special">(</span><a href="next.html" title="next"><code class="computeroutput"><span class="identifier">next</span></code></a><span class="special">(</span><a href="../../sequences/intrinsics/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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<span class="identifier">assert</span><span class="special">(</span><a href="deref.html" title="deref"><code class="computeroutput"><span class="identifier">deref</span></code></a><span class="special">(</span><a href="next.html" title="next"><code class="computeroutput"><span class="identifier">next</span></code></a><span class="special">(</span><a href="next.html" title="next"><code class="computeroutput"><span class="identifier">next</span></code></a><span class="special">(</span><a href="../../sequences/intrinsics/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">3</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"><small>Copyright © 2001-2007 Joel de Guzman, Dan Marsden, Tobias
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Schwinger</small></td>
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</tr></table>
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