1<?xml version="1.0" encoding="utf-8" ?> 2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 3<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> 4<head> 5<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 6<meta name="generator" content="Docutils 0.5: http://docutils.sourceforge.net/" /> 7<title>Writable Iterator Concept</title> 8<link rel="stylesheet" href="../../../rst.css" type="text/css" /> 9</head> 10<body> 11<div class="document" id="writable-iterator-concept"> 12<h1 class="title">Writable Iterator Concept</h1> 13 14<!-- Copyright David Abrahams 2006. Distributed under the Boost --> 15<!-- Software License, Version 1.0. (See accompanying --> 16<!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) --> 17<p>A class or built-in type <tt class="docutils literal"><span class="pre">X</span></tt> models the <em>Writable Iterator</em> concept 18if, in addition to <tt class="docutils literal"><span class="pre">X</span></tt> being Copy Constructible, the following 19expressions are valid and respect the stated semantics. Writable 20Iterators have an associated <em>set of value types</em>.</p> 21<table border="1" class="docutils"> 22<colgroup> 23<col width="37%" /> 24<col width="21%" /> 25<col width="42%" /> 26</colgroup> 27<thead valign="bottom"> 28<tr><th class="head" colspan="3">Writable Iterator Requirements (in addition to Copy Constructible)</th> 29</tr> 30<tr><th class="head">Expression</th> 31<th class="head">Return Type</th> 32<th class="head">Precondition</th> 33</tr> 34</thead> 35<tbody valign="top"> 36<tr><td><tt class="docutils literal"><span class="pre">*a</span> <span class="pre">=</span> <span class="pre">o</span></tt></td> 37<td> </td> 38<td>pre: The type of <tt class="docutils literal"><span class="pre">o</span></tt> 39is in the set of 40value types of <tt class="docutils literal"><span class="pre">X</span></tt></td> 41</tr> 42</tbody> 43</table> 44</div> 45<div class="footer"> 46<hr class="footer" /> 47<a class="reference external" href="WritableIterator.rst">View document source</a>. 48Generated by <a class="reference external" href="http://docutils.sourceforge.net/">Docutils</a> from <a class="reference external" href="http://docutils.sourceforge.net/rst.html">reStructuredText</a> source. 49 50</div> 51</body> 52</html> 53