1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>iota</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="../new.html" title="New algorithms"> 9<link rel="prev" href="insert.html" title="insert"> 10<link rel="next" href="is_sorted.html" title="is_sorted"> 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="insert.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../new.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="is_sorted.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.new.iota"></a><a class="link" href="iota.html" title="iota">iota</a> 28</h5></div></div></div> 29<h6> 30<a name="range.reference.algorithms.new.iota.h0"></a> 31 <span class="phrase"><a name="range.reference.algorithms.new.iota.prototype"></a></span><a class="link" href="iota.html#range.reference.algorithms.new.iota.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> <span class="keyword">class</span> <span class="identifier">Value</span><span class="special">></span> 36<span class="identifier">ForwardRange</span><span class="special">&</span> <span class="identifier">iota</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">Value</span> <span class="identifier">x</span><span class="special">);</span> 37</pre> 38<p> 39 </p> 40<h6> 41<a name="range.reference.algorithms.new.iota.h1"></a> 42 <span class="phrase"><a name="range.reference.algorithms.new.iota.description"></a></span><a class="link" href="iota.html#range.reference.algorithms.new.iota.description">Description</a> 43 </h6> 44<p> 45 <code class="computeroutput"><span class="identifier">iota</span></code> traverses forward 46 through <code class="computeroutput"><span class="identifier">rng</span></code>, each element 47 <code class="computeroutput"><span class="identifier">y</span></code> in <code class="computeroutput"><span class="identifier">rng</span></code> 48 is assigned a value equivalent to <code class="computeroutput"><span class="identifier">x</span> 49 <span class="special">+</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">distance</span><span class="special">(</span><span class="identifier">boost</span><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">it</span><span class="special">)</span></code> 50 </p> 51<h6> 52<a name="range.reference.algorithms.new.iota.h2"></a> 53 <span class="phrase"><a name="range.reference.algorithms.new.iota.definition"></a></span><a class="link" href="iota.html#range.reference.algorithms.new.iota.definition">Definition</a> 54 </h6> 55<p> 56 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_ext</span><span class="special">/</span><span class="identifier">iota</span><span class="special">.</span><span class="identifier">hpp</span></code> 57 </p> 58<h6> 59<a name="range.reference.algorithms.new.iota.h3"></a> 60 <span class="phrase"><a name="range.reference.algorithms.new.iota.requirements"></a></span><a class="link" href="iota.html#range.reference.algorithms.new.iota.requirements">Requirements</a> 61 </h6> 62<div class="orderedlist"><ol class="orderedlist" type="1"> 63<li class="listitem"> 64 <code class="computeroutput"><span class="identifier">ForwardRange</span></code> is a 65 model of the <a class="link" href="../../../concepts/forward_range.html" title="Forward Range">Forward 66 Range</a> Concept. 67 </li> 68<li class="listitem"> 69 <code class="computeroutput"><span class="identifier">Value</span></code> is a model 70 of the <code class="computeroutput"><span class="identifier">Incrementable</span></code> 71 Concept. 72 </li> 73</ol></div> 74<h6> 75<a name="range.reference.algorithms.new.iota.h4"></a> 76 <span class="phrase"><a name="range.reference.algorithms.new.iota.complexity"></a></span><a class="link" href="iota.html#range.reference.algorithms.new.iota.complexity">Complexity</a> 77 </h6> 78<p> 79 Linear. Exactly <code class="computeroutput"><span class="identifier">distance</span><span class="special">(</span><span class="identifier">rng</span><span class="special">)</span></code> assignments into <code class="computeroutput"><span class="identifier">rng</span></code>. 80 </p> 81</div> 82<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 83<td align="left"></td> 84<td align="right"><div class="copyright-footer">Copyright © 2003-2010 Thorsten Ottosen, 85 Neil Groves<p> 86 Distributed under the Boost Software License, Version 1.0. (See accompanying 87 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>) 88 </p> 89</div></td> 90</tr></table> 91<hr> 92<div class="spirit-nav"> 93<a accesskey="p" href="insert.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../new.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="is_sorted.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 94</div> 95</body> 96</html> 97
