1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Operator ==</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. Fusion 2.2"> 8<link rel="up" href="../operator.html" title="Operator"> 9<link rel="prev" href="operator_unary_star.html" title="Operator *"> 10<link rel="next" href="operator_inequality.html" title="Operator !="> 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="operator_unary_star.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../operator.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="operator_inequality.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="fusion.iterator.operator.operator_equality"></a><a class="link" href="operator_equality.html" title="Operator ==">Operator 28 ==</a> 29</h4></div></div></div> 30<h6> 31<a name="fusion.iterator.operator.operator_equality.h0"></a> 32 <span class="phrase"><a name="fusion.iterator.operator.operator_equality.description"></a></span><a class="link" href="operator_equality.html#fusion.iterator.operator.operator_equality.description">Description</a> 33 </h6> 34<p> 35 Compares 2 iterators for equality. 36 </p> 37<h6> 38<a name="fusion.iterator.operator.operator_equality.h1"></a> 39 <span class="phrase"><a name="fusion.iterator.operator.operator_equality.synopsis"></a></span><a class="link" href="operator_equality.html#fusion.iterator.operator.operator_equality.synopsis">Synopsis</a> 40 </h6> 41<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span> 42 <span class="keyword">typename</span> <span class="identifier">I</span><span class="special">,</span> 43 <span class="keyword">typename</span> <span class="identifier">J</span> 44 <span class="special">></span> 45<span class="emphasis"><em>unspecified</em></span> <span class="keyword">operator</span><span class="special">==(</span><span class="identifier">I</span> <span class="keyword">const</span><span class="special">&</span> <span class="identifier">i</span><span class="special">,</span> <span class="identifier">J</span> <span class="keyword">const</span><span class="special">&</span> <span class="identifier">i</span><span class="special">);</span> 46</pre> 47<div class="table"> 48<a name="fusion.iterator.operator.operator_equality.t0"></a><p class="title"><b>Table 1.9. Parameters</b></p> 49<div class="table-contents"><table class="table" summary="Parameters"> 50<colgroup> 51<col> 52<col> 53<col> 54</colgroup> 55<thead><tr> 56<th> 57 <p> 58 Parameter 59 </p> 60 </th> 61<th> 62 <p> 63 Requirement 64 </p> 65 </th> 66<th> 67 <p> 68 Description 69 </p> 70 </th> 71</tr></thead> 72<tbody><tr> 73<td> 74 <p> 75 <code class="computeroutput"><span class="identifier">i</span></code>, <code class="computeroutput"><span class="identifier">j</span></code> 76 </p> 77 </td> 78<td> 79 <p> 80 Any fusion iterators 81 </p> 82 </td> 83<td> 84 <p> 85 Operation's arguments 86 </p> 87 </td> 88</tr></tbody> 89</table></div> 90</div> 91<br class="table-break"><h6> 92<a name="fusion.iterator.operator.operator_equality.h2"></a> 93 <span class="phrase"><a name="fusion.iterator.operator.operator_equality.expression_semantics"></a></span><a class="link" href="operator_equality.html#fusion.iterator.operator.operator_equality.expression_semantics">Expression 94 Semantics</a> 95 </h6> 96<pre class="programlisting"><span class="identifier">i</span> <span class="special">==</span> <span class="identifier">j</span> 97</pre> 98<p> 99 <span class="bold"><strong>Return type</strong></span>: Convertible to <code class="computeroutput"><span class="keyword">bool</span></code>. 100 </p> 101<p> 102 <span class="bold"><strong>Semantics</strong></span>: Equivalent to <code class="computeroutput"><a class="link" href="../metafunctions/equal_to.html" title="equal_to"><code class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">equal_to</span></code></a><span class="special"><</span><span class="identifier">I</span><span class="special">,</span><span class="identifier">J</span><span class="special">>::</span><span class="identifier">value</span></code> 103 where <code class="computeroutput"><span class="identifier">I</span></code> and <code class="computeroutput"><span class="identifier">J</span></code> are the types of <code class="computeroutput"><span class="identifier">i</span></code> 104 and <code class="computeroutput"><span class="identifier">j</span></code> respectively. 105 </p> 106<h6> 107<a name="fusion.iterator.operator.operator_equality.h3"></a> 108 <span class="phrase"><a name="fusion.iterator.operator.operator_equality.header"></a></span><a class="link" href="operator_equality.html#fusion.iterator.operator.operator_equality.header">Header</a> 109 </h6> 110<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">iterator</span><span class="special">/</span><span class="identifier">equal_to</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 111<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">include</span><span class="special">/</span><span class="identifier">equal_to</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 112</pre> 113</div> 114<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 115<td align="left"></td> 116<td align="right"><div class="copyright-footer">Copyright © 2001-2006, 2011, 2012 Joel de Guzman, 117 Dan Marsden, Tobias Schwinger<p> 118 Distributed under the Boost Software License, Version 1.0. (See accompanying 119 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>) 120 </p> 121</div></td> 122</tr></table> 123<hr> 124<div class="spirit-nav"> 125<a accesskey="p" href="operator_unary_star.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../operator.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="operator_inequality.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> 126</div> 127</body> 128</html> 129
