1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>boost::geometry::index::equal_to</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. Geometry"> 8<link rel="up" href="../observers.html" title="Observers (boost::geometry::index::)"> 9<link rel="prev" href="boost__geometry__index__indexable.html" title="boost::geometry::index::indexable"> 10<link rel="next" href="../group__inserters.html" title="Inserters (boost::geometry::index::)"> 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="boost__geometry__index__indexable.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../observers.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="../group__inserters.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="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to"></a><a name="structboost_1_1geometry_1_1index_1_1equal__to"></a><a class="link" href="boost__geometry__index__equal_to.html" title="boost::geometry::index::equal_to">boost::geometry::index::equal_to</a> 28</h5></div></div></div> 29<div class="toc"><dl class="toc"><dt><span class="section"><a href="boost__geometry__index__equal_to.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___">operator()(Value 30 const &, Value const &)</a></span></dt></dl></div> 31<p> 32 <a class="indexterm" name="idm45635672947424"></a><a class="indexterm" name="idm45635672946736"></a><a class="indexterm" name="idm45635672946048"></a><a class="indexterm" name="idm45635672945360"></a> 33The function object comparing Values. 34 </p> 35<h6> 36<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.h0"></a> 37 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.description"></a></span><a class="link" href="boost__geometry__index__equal_to.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.description">Description</a> 38 </h6> 39<p> 40 The default version handles Values which are Indexables, std::pair<T1, 41 T2>, boost::tuple<...> and std::tuple<...> if STD tuples 42 and variadic templates are supported. All members are compared from left 43 to right, Geometries using boost::geometry::equals() function, other 44 types using operator==. 45 </p> 46<h6> 47<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.h1"></a> 48 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.header"></a></span><a class="link" href="boost__geometry__index__equal_to.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.header">Header</a> 49 </h6> 50<p> 51 <code class="computeroutput"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">geometry</span><span class="special">/</span><span class="identifier">index</span><span class="special">/</span><span class="identifier">equal_to</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code> 52 </p> 53<h6> 54<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.h2"></a> 55 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.synopsis"></a></span><a class="link" href="boost__geometry__index__equal_to.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.synopsis">Synopsis</a> 56 </h6> 57<pre class="programlisting"><code class="computeroutput"><span class="keyword">template</span><span class="special"><</span></code><code class="computeroutput"><span class="keyword">typename</span> <span class="identifier">Value</span></code><code class="computeroutput"><span class="special">></span></code> 58<code class="computeroutput"><span class="keyword">struct</span> <span class="identifier">equal_to</span></code> 59<code class="computeroutput"><span class="special">{</span></code> 60<code class="computeroutput"> <span class="comment">// ...</span></code> 61<code class="computeroutput"><span class="special">};</span></code> 62</pre> 63<h6> 64<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.h3"></a> 65 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.template_parameter_s_"></a></span><a class="link" href="boost__geometry__index__equal_to.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.template_parameter_s_">Template 66 parameter(s)</a> 67 </h6> 68<div class="informaltable"><table class="table"> 69<colgroup> 70<col> 71<col> 72</colgroup> 73<thead><tr> 74<th> 75 <p> 76 Parameter 77 </p> 78 </th> 79<th> 80 <p> 81 Description 82 </p> 83 </th> 84</tr></thead> 85<tbody><tr> 86<td> 87 <p> 88 <code class="computeroutput"><span class="identifier">Value</span></code> 89 </p> 90 </td> 91<td> 92 <p> 93 The type of objects which are compared by this function object. 94 </p> 95 </td> 96</tr></tbody> 97</table></div> 98<h6> 99<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.h4"></a> 100 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.typedef_s_"></a></span><a class="link" href="boost__geometry__index__equal_to.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.typedef_s_">Typedef(s)</a> 101 </h6> 102<div class="informaltable"><table class="table"> 103<colgroup> 104<col> 105<col> 106</colgroup> 107<thead><tr> 108<th> 109 <p> 110 Type 111 </p> 112 </th> 113<th> 114 <p> 115 Description 116 </p> 117 </th> 118</tr></thead> 119<tbody><tr> 120<td> 121 <p> 122 <a name="structboost_1_1geometry_1_1index_1_1equal__to_1ae6a986988e380c2ba4afa646294cfd93"></a><code class="computeroutput"><span class="identifier">result_type</span></code> 123 </p> 124 </td> 125<td> 126 <p> 127 The type of result returned by function object. 128 </p> 129 </td> 130</tr></tbody> 131</table></div> 132<h6> 133<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.h5"></a> 134 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.member_s_"></a></span><a class="link" href="boost__geometry__index__equal_to.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.member_s_">Member(s)</a> 135 </h6> 136<div class="informaltable"><table class="table"> 137<colgroup> 138<col> 139<col> 140<col> 141</colgroup> 142<thead><tr> 143<th> 144 <p> 145 Modifier 146 </p> 147 </th> 148<th> 149 <p> 150 Function 151 </p> 152 </th> 153<th> 154 <p> 155 Description 156 </p> 157 </th> 158</tr></thead> 159<tbody><tr> 160<td> 161 <p> 162 <code class="computeroutput"><span class="keyword">const</span></code> 163 </p> 164 </td> 165<td> 166 <p> 167 <a class="link" href="boost__geometry__index__equal_to.html#structboost_1_1geometry_1_1index_1_1equal__to_1aaeece0d0d4cc09ee939b85db0c08b584"><code class="computeroutput"><span class="keyword">operator</span><span class="special">()(</span><span class="identifier">Value</span> <span class="keyword">const</span> 168 <span class="special">&,</span> <span class="identifier">Value</span> 169 <span class="keyword">const</span> <span class="special">&)</span></code></a> 170 </p> 171 </td> 172<td> 173 <p> 174 Compare Values. 175 </p> 176 </td> 177</tr></tbody> 178</table></div> 179<div class="section"> 180<div class="titlepage"><div><div><h6 class="title"> 181<a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___"></a><a name="structboost_1_1geometry_1_1index_1_1equal__to_1aaeece0d0d4cc09ee939b85db0c08b584"></a><a class="link" href="boost__geometry__index__equal_to.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___" title="operator()(Value const &, Value const &)">operator()(Value 182 const &, Value const &)</a> 183</h6></div></div></div> 184<p> 185 <a class="indexterm" name="idm45635672873136"></a> 186Compare Values. 187 </p> 188<h7><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___.h0"></a> 189 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___.synopsis"></a></span><a class="link" href="boost__geometry__index__equal_to.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___.synopsis">Synopsis</a> 190 </h7><pre class="programlisting"><code class="computeroutput"><span class="keyword">bool</span></code> <code class="computeroutput"><span class="keyword">operator</span><span class="special">()</span></code><code class="computeroutput"><span class="special">(</span></code><code class="computeroutput"><span class="identifier">Value</span> <span class="keyword">const</span> <span class="special">&</span></code> <code class="computeroutput"><span class="identifier">l</span></code><code class="computeroutput"><span class="special">,</span></code> <code class="computeroutput"><span class="identifier">Value</span> <span class="keyword">const</span> <span class="special">&</span></code> <code class="computeroutput"><span class="identifier">r</span></code><code class="computeroutput"><span class="special">)</span></code> 191</pre> 192<h7><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___.h1"></a> 193 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___.modifier_s_"></a></span><a class="link" href="boost__geometry__index__equal_to.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___.modifier_s_">Modifier(s)</a> 194 </h7><p> 195</p> 196<pre class="programlisting"><span class="keyword">const</span></pre> 197<p> 198 </p> 199<h7><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___.h2"></a> 200 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___.parameter_s_"></a></span><a class="link" href="boost__geometry__index__equal_to.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___.parameter_s_">Parameter(s)</a> 201 </h7><div class="informaltable"><table class="table"> 202<colgroup> 203<col> 204<col> 205<col> 206</colgroup> 207<thead><tr> 208<th> 209 <p> 210 Type 211 </p> 212 </th> 213<th> 214 <p> 215 Name 216 </p> 217 </th> 218<th> 219 <p> 220 Description 221 </p> 222 </th> 223</tr></thead> 224<tbody> 225<tr> 226<td> 227 <p> 228 <code class="computeroutput"><span class="identifier">Value</span> <span class="keyword">const</span> 229 <span class="special">&</span></code> 230 </p> 231 </td> 232<td> 233 <p> 234 <code class="computeroutput"><span class="identifier">l</span></code> 235 </p> 236 </td> 237<td> 238 <p> 239 First value. 240 </p> 241 </td> 242</tr> 243<tr> 244<td> 245 <p> 246 <code class="computeroutput"><span class="identifier">Value</span> <span class="keyword">const</span> 247 <span class="special">&</span></code> 248 </p> 249 </td> 250<td> 251 <p> 252 <code class="computeroutput"><span class="identifier">r</span></code> 253 </p> 254 </td> 255<td> 256 <p> 257 Second value. 258 </p> 259 </td> 260</tr> 261</tbody> 262</table></div> 263<h7><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___.h3"></a> 264 <span class="phrase"><a name="geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___.returns"></a></span><a class="link" href="boost__geometry__index__equal_to.html#geometry.reference.spatial_indexes.observers.boost__geometry__index__equal_to.operator___value_const____value_const___.returns">Returns</a> 265 </h7><p> 266 true if Values are equal. 267 </p> 268</div> 269</div> 270<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 271<td align="left"></td> 272<td align="right"><div class="copyright-footer">Copyright © 2009-2019 Barend Gehrels, Bruno Lalande, Mateusz Loskot, Adam 273 Wulkiewicz, Oracle and/or its affiliates<p> 274 Distributed under the Boost Software License, Version 1.0. (See accompanying 275 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>) 276 </p> 277</div></td> 278</tr></table> 279<hr> 280<div class="spirit-nav"> 281<a accesskey="p" href="boost__geometry__index__indexable.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../observers.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="../group__inserters.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 282</div> 283</body> 284</html> 285
