1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>rotate</title> 5<link rel="stylesheet" href="../../../../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../../../index.html" title="Chapter 1. Range 2.0"> 8<link rel="up" href="../mutating.html" title="Mutating algorithms"> 9<link rel="prev" href="reverse_copy.html" title="reverse_copy"> 10<link rel="next" href="rotate_copy.html" title="rotate_copy"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="reverse_copy.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="rotate_copy.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h5 class="title"> 27<a name="range.reference.algorithms.mutating.rotate"></a><a class="link" href="rotate.html" title="rotate">rotate</a> 28</h5></div></div></div> 29<h6> 30<a name="range.reference.algorithms.mutating.rotate.h0"></a> 31 <span class="phrase"><a name="range.reference.algorithms.mutating.rotate.prototype"></a></span><a class="link" href="rotate.html#range.reference.algorithms.mutating.rotate.prototype">Prototype</a> 32 </h6> 33<p> 34</p> 35<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> 36<span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rotate</span><span class="special">(</span><span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rng</span><span class="special">,</span> 37 <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">middle</span><span class="special">);</span> 38 39<span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">ForwardRange</span><span class="special">></span> 40<span class="keyword">const</span> <span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">rotate</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> 41 <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">middle</span><span class="special">);</span> 42</pre> 43<p> 44 </p> 45<h6> 46<a name="range.reference.algorithms.mutating.rotate.h1"></a> 47 <span class="phrase"><a name="range.reference.algorithms.mutating.rotate.description"></a></span><a class="link" href="rotate.html#range.reference.algorithms.mutating.rotate.description">Description</a> 48 </h6> 49<p> 50 <code class="computeroutput"><span class="identifier">rotate</span></code> rotates the elements 51 in a range. It exchanges the two ranges <code class="computeroutput"><span class="special">[</span><span class="identifier">begin</span><span class="special">(</span><span class="identifier">rng</span><span class="special">),</span> <span class="identifier">middle</span><span class="special">)</span></code> 52 and <code class="computeroutput"><span class="special">[</span><span class="identifier">middle</span><span class="special">,</span> <span class="identifier">end</span><span class="special">(</span><span class="identifier">rng</span><span class="special">))</span></code>. Returns a reference to <code class="computeroutput"><span class="identifier">rng</span></code>. 53 </p> 54<h6> 55<a name="range.reference.algorithms.mutating.rotate.h2"></a> 56 <span class="phrase"><a name="range.reference.algorithms.mutating.rotate.definition"></a></span><a class="link" href="rotate.html#range.reference.algorithms.mutating.rotate.definition">Definition</a> 57 </h6> 58<p> 59 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">rotate</span><span class="special">.</span><span class="identifier">hpp</span></code> 60 </p> 61<h6> 62<a name="range.reference.algorithms.mutating.rotate.h3"></a> 63 <span class="phrase"><a name="range.reference.algorithms.mutating.rotate.requirements"></a></span><a class="link" href="rotate.html#range.reference.algorithms.mutating.rotate.requirements">Requirements</a> 64 </h6> 65<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> 66<li class="listitem"> 67 <code class="computeroutput"><span class="identifier">ForwardRange</span></code> is a 68 model of the <a class="link" href="../../../concepts/forward_range.html" title="Forward Range">Forward 69 Range</a> Concept. 70 </li> 71<li class="listitem"> 72 <code class="computeroutput"><span class="identifier">ForwardRange</span></code> is mutable. 73 </li> 74</ul></div> 75<h6> 76<a name="range.reference.algorithms.mutating.rotate.h4"></a> 77 <span class="phrase"><a name="range.reference.algorithms.mutating.rotate.precondition_"></a></span><a class="link" href="rotate.html#range.reference.algorithms.mutating.rotate.precondition_">Precondition:</a> 78 </h6> 79<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> 80<li class="listitem"> 81 <code class="computeroutput"><span class="special">[</span><span class="identifier">begin</span><span class="special">(</span><span class="identifier">rng</span><span class="special">),</span> <span class="identifier">middle</span><span class="special">)</span></code> is a valid range. 82 </li> 83<li class="listitem"> 84 <code class="computeroutput"><span class="special">[</span><span class="identifier">middle</span><span class="special">,</span> <span class="identifier">end</span><span class="special">(</span><span class="identifier">rng</span><span class="special">))</span></code> is a valid range. 85 </li> 86</ul></div> 87<h6> 88<a name="range.reference.algorithms.mutating.rotate.h5"></a> 89 <span class="phrase"><a name="range.reference.algorithms.mutating.rotate.complexity"></a></span><a class="link" href="rotate.html#range.reference.algorithms.mutating.rotate.complexity">Complexity</a> 90 </h6> 91<p> 92 Linear. At most <code class="computeroutput"><span class="identifier">distance</span><span class="special">(</span><span class="identifier">rng</span><span class="special">)</span></code> swaps are performed. 93 </p> 94</div> 95<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 96<td align="left"></td> 97<td align="right"><div class="copyright-footer">Copyright © 2003-2010 Thorsten Ottosen, 98 Neil Groves<p> 99 Distributed under the Boost Software License, Version 1.0. (See accompanying 100 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>) 101 </p> 102</div></td> 103</tr></table> 104<hr> 105<div class="spirit-nav"> 106<a accesskey="p" href="reverse_copy.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="rotate_copy.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 107</div> 108</body> 109</html> 110
