forked from boostorg/fusion
70 lines
4.9 KiB
HTML
70 lines
4.9 KiB
HTML
<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>View</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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<link rel="start" href="../index.html" title="Chapter 1. Fusion 2.0">
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<link rel="up" href="../index.html" title="Chapter 1. Fusion 2.0">
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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<table cellpadding="2" width="100%"><tr>
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<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td>
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<td align="center"><a href="../../../../../index.html">Home</a></td>
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<td align="center"><a href="../../../../libraries.htm">Libraries</a></td>
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<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
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</div>
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<div class="section" lang="en">
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
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<a name="fusion.view"></a><a href="view.html" title="View">View</a></h2></div></div></div>
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<div class="toc"><dl>
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<dt><span class="section"><a href="view/single_view.html">single_view</a></span></dt>
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<dt><span class="section"><a href="view/filter_view.html">filter_view</a></span></dt>
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<dt><span class="section"><a href="view/iterator_range.html">iterator_range</a></span></dt>
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<dt><span class="section"><a href="view/joint_view.html">joint_view</a></span></dt>
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<dt><span class="section"><a href="view/zip_view.html">zip_view</a></span></dt>
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<dt><span class="section"><a href="view/transform_view.html">transform_view</a></span></dt>
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<dt><span class="section"><a href="view/reverse_view.html">reverse_view</a></span></dt>
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</dl></div>
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<p>
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Views are sequences that do not actually contain data, but instead impart an
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alternative presentation over the data from one or more underlying sequences.
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Views are proxies. They provide an efficient yet purely functional way to work
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on potentially expensive sequence operations. Views are inherently lazy. Their
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elements are only computed on demand only when the elements of the underlying
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sequence(s) are actually accessed. Views' lazy nature make them very cheap
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to copy and be passed around by value.
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</p>
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<a name="fusion.view.header"></a><h3>
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<a name="id563087"></a>
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<a href="view.html#fusion.view.header">Header</a>
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</h3>
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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">view</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">view</span><span class="special">.</span><span class="identifier">hpp</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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