1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>irange</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="../ranges.html" title="Provided Ranges"> 9<link rel="prev" href="istream_range.html" title="istream_range"> 10<link rel="next" href="../utilities.html" title="Utilities"> 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="istream_range.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../ranges.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="../utilities.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h4 class="title"> 27<a name="range.reference.ranges.irange"></a><a class="link" href="irange.html" title="irange">irange</a> 28</h4></div></div></div> 29<h6> 30<a name="range.reference.ranges.irange.h0"></a> 31 <span class="phrase"><a name="range.reference.ranges.irange.prototype"></a></span><a class="link" href="irange.html#range.reference.ranges.irange.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">Integer</span><span class="special">></span> 36<span class="identifier">iterator_range</span><span class="special"><</span> <span class="identifier">range_detail</span><span class="special">::</span><span class="identifier">integer_iterator</span><span class="special"><</span><span class="identifier">Integer</span><span class="special">></span> <span class="special">></span> 37<span class="identifier">irange</span><span class="special">(</span><span class="identifier">Integer</span> <span class="identifier">last</span><span class="special">);</span> 38 39<span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">Integer</span><span class="special">></span> 40<span class="identifier">iterator_range</span><span class="special"><</span> <span class="identifier">range_detail</span><span class="special">::</span><span class="identifier">integer_iterator</span><span class="special"><</span><span class="identifier">Integer</span><span class="special">></span> <span class="special">></span> 41<span class="identifier">irange</span><span class="special">(</span><span class="identifier">Integer</span> <span class="identifier">first</span><span class="special">,</span> <span class="identifier">Integer</span> <span class="identifier">last</span><span class="special">);</span> 42 43<span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">Integer</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">StepSize</span><span class="special">></span> 44<span class="identifier">iterator_range</span><span class="special"><</span> <span class="identifier">range_detail</span><span class="special">::</span><span class="identifier">integer_iterator_with_step</span><span class="special"><</span><span class="identifier">Integer</span><span class="special">,</span> <span class="identifier">StepSize</span><span class="special">></span> <span class="special">></span> 45<span class="identifier">irange</span><span class="special">(</span><span class="identifier">Integer</span> <span class="identifier">first</span><span class="special">,</span> <span class="identifier">Integer</span> <span class="identifier">last</span><span class="special">,</span> <span class="identifier">StepSize</span> <span class="identifier">step_size</span><span class="special">);</span> 46</pre> 47<p> 48 </p> 49<h6> 50<a name="range.reference.ranges.irange.h1"></a> 51 <span class="phrase"><a name="range.reference.ranges.irange.description"></a></span><a class="link" href="irange.html#range.reference.ranges.irange.description">Description</a> 52 </h6> 53<p> 54 <code class="computeroutput"><span class="identifier">irange</span></code> is a function to 55 generate an Integer Range. 56 </p> 57<p> 58 <code class="computeroutput"><span class="identifier">irange</span></code> allows treating 59 integers as a model of the <a class="link" href="../../concepts/random_access_range.html" title="Random Access Range">Random 60 Access Range</a> Concept. It should be noted that the <code class="computeroutput"><span class="identifier">first</span></code> and <code class="computeroutput"><span class="identifier">last</span></code> 61 parameters denoted a half-open range. 62 </p> 63<h6> 64<a name="range.reference.ranges.irange.h2"></a> 65 <span class="phrase"><a name="range.reference.ranges.irange.definition"></a></span><a class="link" href="irange.html#range.reference.ranges.irange.definition">Definition</a> 66 </h6> 67<p> 68 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">irange</span><span class="special">.</span><span class="identifier">hpp</span></code> 69 </p> 70<h6> 71<a name="range.reference.ranges.irange.h3"></a> 72 <span class="phrase"><a name="range.reference.ranges.irange.requirements"></a></span><a class="link" href="irange.html#range.reference.ranges.irange.requirements">Requirements</a> 73 </h6> 74<div class="orderedlist"><ol class="orderedlist" type="1"> 75<li class="listitem"> 76 <code class="computeroutput"><span class="identifier">Integer</span></code> is a model 77 of the <code class="computeroutput"><span class="identifier">Integer</span></code> Concept. 78 </li> 79<li class="listitem"> 80 <code class="computeroutput"><span class="identifier">StepSize</span></code> is a model 81 of the <code class="computeroutput"><span class="identifier">SignedInteger</span></code> 82 Concept. 83 </li> 84</ol></div> 85<h6> 86<a name="range.reference.ranges.irange.h4"></a> 87 <span class="phrase"><a name="range.reference.ranges.irange.complexity"></a></span><a class="link" href="irange.html#range.reference.ranges.irange.complexity">Complexity</a> 88 </h6> 89<p> 90 Constant. Since this function generates a new range the most significant 91 performance cost is incurred through the iteration of the generated range. 92 </p> 93</div> 94<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 95<td align="left"></td> 96<td align="right"><div class="copyright-footer">Copyright © 2003-2010 Thorsten Ottosen, 97 Neil Groves<p> 98 Distributed under the Boost Software License, Version 1.0. (See accompanying 99 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>) 100 </p> 101</div></td> 102</tr></table> 103<hr> 104<div class="spirit-nav"> 105<a accesskey="p" href="istream_range.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../ranges.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="../utilities.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> 106</div> 107</body> 108</html> 109
