forked from boostorg/mpl
41 lines
4.3 KiB
HTML
41 lines
4.3 KiB
HTML
<?xml version="1.0" encoding="utf-8" ?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<meta name="generator" content="Docutils 0.3.6: http://docutils.sourceforge.net/" />
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<title>The MPL Reference Manual: Views</title>
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</head>
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<body class="docframe refmanual">
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<table class="header"><tr class="header"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./set-c.html" class="navigation-link">Prev</a> <a href="./empty-sequence.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./classes.html" class="navigation-link">Back</a> <a href="./intrinsic-metafunctions.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./sequences.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></span></td>
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<td class="header-group page-location"><a href="../refmanual.html" class="navigation-link">Front Page</a> / <a href="./sequences.html" class="navigation-link">Sequences</a> / <a href="./views.html" class="navigation-link">Views</a></td>
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</tr></table><div class="header-separator"></div>
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<div class="section" id="views">
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<h1><a class="toc-backref" href="./sequences.html#id344" name="views">Views</a></h1>
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<a class="target" id="label-sequences-views" name="label-sequences-views"></a><p>A <em>view</em> is a sequence adaptor delivering an altered presentation of
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one or more underlying sequences. Views are lazy, meaning that their
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elements are only computed on demand. Similarly to the short-circuit
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<a class="reference" href="./logical-operations.html">logical operations</a> and <a class="refentry reference" href="./eval-if.html"><tt class="refentry literal"><span class="pre">eval_if</span></tt></a>, views make it possible to avoid
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premature errors and inefficiencies from computations whose results
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will never be used. When approached with views in mind, many
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algorithmic problems can be solved in a simpler, more conceptually
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precise, more expressive way.</p>
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<!-- modtime: November 05, 2004 05:16:05 +0000 -->
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<!-- Sequences/Views//empty_sequence -->
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<ul class="toc simple" id="outline">
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<li><a class="reference" href="./empty-sequence.html" id="id345" name="id345">empty_sequence</a></li>
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<li><a class="reference" href="./filter-view.html" id="id346" name="id346">filter_view</a></li>
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<li><a class="reference" href="./iterator-range.html" id="id347" name="id347">iterator_range</a></li>
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<li><a class="reference" href="./joint-view.html" id="id348" name="id348">joint_view</a></li>
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<li><a class="reference" href="./single-view.html" id="id349" name="id349">single_view</a></li>
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<li><a class="reference" href="./transform-view.html" id="id350" name="id350">transform_view</a></li>
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<li><a class="reference" href="./zip-view.html" id="id351" name="id351">zip_view</a></li>
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</ul>
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</div>
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<div class="footer-separator"></div>
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<table class="footer"><tr class="footer"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./set-c.html" class="navigation-link">Prev</a> <a href="./empty-sequence.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./classes.html" class="navigation-link">Back</a> <a href="./intrinsic-metafunctions.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./sequences.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></span></td>
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