<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <title>zip</title> <link rel="stylesheet" href="../../../../../../../../doc/html/boostbook.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.75.1"> <link rel="home" href="../../../../index.html" title="Chapter 1. Fusion 2.0"> <link rel="up" href="../metafunctions.html" title="Metafunctions"> <link rel="prev" href="join.html" title="join"> <link rel="next" href="pop_back.html" title="pop_back"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table cellpadding="2" width="100%"><tr> <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td> <td align="center"><a href="../../../../../../../../index.html">Home</a></td> <td align="center"><a href="../../../../../../../libraries.htm">Libraries</a></td> <td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> <td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> <td align="center"><a href="../../../../../../../../more/index.htm">More</a></td> </tr></table> <hr> <div class="spirit-nav"> <a accesskey="p" href="join.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.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="pop_back.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a> </div> <div class="section" title="zip"> <div class="titlepage"><div><div><h5 class="title"> <a name="fusion.algorithm.transformation.metafunctions.zip"></a><a class="link" href="zip.html" title="zip">zip</a> </h5></div></div></div> <a name="fusion.algorithm.transformation.metafunctions.zip.description"></a><h6> <a name="id798880"></a> <a class="link" href="zip.html#fusion.algorithm.transformation.metafunctions.zip.description">Description</a> </h6> <p> Zips sequences together to form a single sequence, whos members are tuples of the members of the component sequences. </p> <a name="fusion.algorithm.transformation.metafunctions.zip.synopsis"></a><h6> <a name="id798901"></a> <a class="link" href="zip.html#fusion.algorithm.transformation.metafunctions.zip.synopsis">Synopsis</a> </h6> <pre class="programlisting"><span class="keyword">template</span><span class="special"><</span> <span class="keyword">typename</span> <span class="identifier">Sequence1</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">Sequence2</span><span class="special">,</span> <span class="special">...</span> <span class="keyword">typename</span> <span class="identifier">SequenceN</span> <span class="special">></span> <span class="keyword">struct</span> <span class="identifier">zip</span> <span class="special">{</span> <span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span> <span class="special">};</span> </pre> <a name="fusion.algorithm.transformation.metafunctions.zip.expression_semantics"></a><h6> <a name="id799011"></a> <a class="link" href="zip.html#fusion.algorithm.transformation.metafunctions.zip.expression_semantics">Expression Semantics</a> </h6> <pre class="programlisting"><a class="link" href="zip.html" title="zip"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">zip</span></code></a><span class="special"><</span><span class="identifier">Sequence1</span><span class="special">,</span> <span class="identifier">Sequence2</span><span class="special">,</span> <span class="special">...</span> <span class="identifier">SequenceN</span><span class="special">>::</span><span class="identifier">type</span> </pre> <p> <span class="bold"><strong>Return type</strong></span>: A model of the most restrictive traversal category of sequences <code class="computeroutput"><span class="identifier">Sequence1</span></code> to <code class="computeroutput"><span class="identifier">SequenceN</span></code>. </p> <p> <span class="bold"><strong>Semantics</strong></span>: Return a sequence containing tuples of elements from each sequence. For example, applying zip to tuples <code class="computeroutput"><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></code> and <code class="computeroutput"><span class="special">(</span><span class="char">'a'</span><span class="special">,</span> <span class="char">'b'</span><span class="special">,</span> <span class="char">'c'</span><span class="special">)</span></code> would return <code class="computeroutput"><span class="special">((</span><span class="number">1</span><span class="special">,</span> <span class="char">'a'</span><span class="special">),(</span><span class="number">2</span><span class="special">,</span> <span class="char">'b'</span><span class="special">),(</span><span class="number">3</span><span class="special">,</span> <span class="char">'c'</span><span class="special">))</span></code> </p> <a name="fusion.algorithm.transformation.metafunctions.zip.complexity"></a><h6> <a name="id799230"></a> <a class="link" href="zip.html#fusion.algorithm.transformation.metafunctions.zip.complexity">Complexity</a> </h6> <p> Constant. </p> <a name="fusion.algorithm.transformation.metafunctions.zip.header"></a><h6> <a name="id799252"></a> <a class="link" href="zip.html#fusion.algorithm.transformation.metafunctions.zip.header">Header</a> </h6> <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">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">zip</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> <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">zip</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> </pre> </div> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <td align="left"></td> <td align="right"><div class="copyright-footer">Copyright © 2001-2007 Joel de Guzman, Dan Marsden, Tobias Schwinger<p> Distributed under the Boost Software License, Version 1.0. (See accompanying 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>) </p> </div></td> </tr></table> <hr> <div class="spirit-nav"> <a accesskey="p" href="join.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.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="pop_back.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a> </div> </body> </html>