<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <title>stable_partition</title> <link rel="stylesheet" href="../../../../../../../../doc/src/boostbook.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.75.2"> <link rel="home" href="../../../../index.html" title="Chapter 1. Range 2.0"> <link rel="up" href="../mutating.html" title="Mutating algorithms"> <link rel="prev" href="sort.html" title="sort"> <link rel="next" href="stable_sort.html" title="stable_sort"> </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="../../../../../../../../libs/libraries.htm">Libraries</a></td> <td align="center"><a 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name="range.reference.algorithms.mutating.stable_partition.prototype"></a><h6> <a name="id812910"></a> <a class="link" href="stable_partition.html#range.reference.algorithms.mutating.stable_partition.prototype">Prototype</a> </h6> <p> </p> <pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">ForwardRange</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">UnaryPredicate</span><span class="special">></span> <span class="keyword">typename</span> <span class="identifier">range_iterator</span><span class="special"><</span><span class="identifier">ForwardRange</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">stable_partition</span><span class="special">(</span><span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rng</span><span class="special">,</span> <span class="identifier">UnaryPredicate</span> <span class="identifier">pred</span><span class="special">);</span> <span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">ForwardRange</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">UnaryPredicate</span><span class="special">></span> <span class="keyword">typename</span> <span class="identifier">range_iterator</span><span class="special"><</span><span class="keyword">const</span> <span class="identifier">ForwardRange</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">stable_partition</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rng</span><span class="special">,</span> <span class="identifier">UnaryPredicate</span> <span class="identifier">pred</span><span class="special">);</span> <span class="keyword">template</span><span class="special"><</span> <span class="identifier">range_return_value</span> <span class="identifier">re</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">ForwardRange</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">UnaryPredicate</span> <span class="special">></span> <span class="keyword">typename</span> <span class="identifier">range_return</span><span class="special"><</span><span class="identifier">ForwardRange</span><span class="special">,</span> <span class="identifier">re</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">stable_partition</span><span class="special">(</span><span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rng</span><span class="special">,</span> <span class="identifier">UnaryPredicate</span> <span class="identifier">pred</span><span class="special">);</span> <span class="keyword">template</span><span class="special"><</span> <span class="identifier">range_return_value</span> <span class="identifier">re</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">ForwardRange</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">UnaryPredicate</span> <span class="special">></span> <span class="keyword">typename</span> <span class="identifier">range_return</span><span class="special"><</span><span class="keyword">const</span> <span class="identifier">ForwardRange</span><span class="special">,</span> <span class="identifier">re</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">stable_partition</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rng</span><span class="special">,</span> <span class="identifier">UnaryPredicate</span> <span class="identifier">pred</span><span class="special">);</span> </pre> <p> </p> <a name="range.reference.algorithms.mutating.stable_partition.description"></a><h6> <a name="id813474"></a> <a class="link" href="stable_partition.html#range.reference.algorithms.mutating.stable_partition.description">Description</a> </h6> <p> <code class="computeroutput"><span class="identifier">stable_partition</span></code> reorders the elements in the range <code class="computeroutput"><span class="identifier">rng</span></code> base on the function object <code class="computeroutput"><span class="identifier">pred</span></code>. Once this function has completed all of the elements that satisfy <code class="computeroutput"><span class="identifier">pred</span></code> appear before all of the elements that fail to satisfy it. <code class="computeroutput"><span class="identifier">stable_partition</span></code> differs from <code class="computeroutput"><span class="identifier">partition</span></code> because it preserves relative order. It is stable. </p> <p> For the versions that return an iterator, the return value is the iterator to the first element that fails to satisfy <code class="computeroutput"><span class="identifier">pred</span></code>. </p> <p> For versions that return a <code class="computeroutput"><span class="identifier">range_return</span></code>, the <code class="computeroutput"><span class="identifier">found</span></code> iterator is the iterator to the first element that fails to satisfy <code class="computeroutput"><span class="identifier">pred</span></code>. </p> <a name="range.reference.algorithms.mutating.stable_partition.definition"></a><h6> <a name="id813620"></a> <a class="link" href="stable_partition.html#range.reference.algorithms.mutating.stable_partition.definition">Definition</a> </h6> <p> Defined in the header file <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">range</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">stable_partition</span><span class="special">.</span><span class="identifier">hpp</span></code> </p> <a name="range.reference.algorithms.mutating.stable_partition.requirements"></a><h6> <a name="id813693"></a> <a class="link" href="stable_partition.html#range.reference.algorithms.mutating.stable_partition.requirements">Requirements</a> </h6> <div class="itemizedlist"><ul class="itemizedlist" type="disc"> <li class="listitem"> <code class="computeroutput"><span class="identifier">ForwardRange</span></code> is a model of the <a class="link" href="../../../concepts/forward_range.html" title="Forward Range">Forward Range</a> Concept. </li> <li class="listitem"> <code class="computeroutput"><span class="identifier">ForwardRange</span></code> is mutable. </li> <li class="listitem"> <code class="computeroutput"><span class="identifier">UnaryPredicate</span></code> is a model of the <code class="computeroutput"><span class="identifier">PredicateConcept</span></code>. </li> </ul></div> <a name="range.reference.algorithms.mutating.stable_partition.complexity"></a><h6> <a name="id813788"></a> <a class="link" href="stable_partition.html#range.reference.algorithms.mutating.stable_partition.complexity">Complexity</a> </h6> <p> Best case: <code class="computeroutput"><span class="identifier">O</span><span class="special">(</span><span class="identifier">N</span><span class="special">)</span></code> where <code class="computeroutput"><span class="identifier">N</span></code> is <code class="computeroutput"><span class="identifier">distance</span><span class="special">(</span><span class="identifier">rng</span><span class="special">)</span></code>. Worst case: <code class="computeroutput"><span class="identifier">N</span> <span class="special">*</span> <span class="identifier">log</span><span class="special">(</span><span class="identifier">N</span><span class="special">)</span></code> swaps, where <code class="computeroutput"><span class="identifier">N</span></code> is <code class="computeroutput"><span class="identifier">distance</span><span class="special">(</span><span class="identifier">rng</span><span class="special">)</span></code>. </p> </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 © 2003 -2010 Thorsten Ottosen, Neil Groves<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="sort.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../mutating.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="stable_sort.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> </div> </body> </html>