58 lines
5.6 KiB
HTML
58 lines
5.6 KiB
HTML
<!DOCTYPE html>
|
|
<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
|
|
<head><meta http-equiv="x-ua-compatible" content="ie=edge">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<title>std::indirect_binary_predicate</title>
|
|
<link rel="stylesheet" href="ext.css" />
|
|
<link rel="stylesheet" href="site_modules.css" />
|
|
</head>
|
|
<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_iterator_indirect_binary_predicate skin-cppreference2 action-view cpp-navbar">
|
|
<div id="cpp-content-base">
|
|
<div id="content"><a id="top"></a>
|
|
<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>indirect_binary_predicate</h1>
|
|
<div id="bodyContent">
|
|
<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-iterator.html">iterator</a></span></div>
|
|
<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
|
|
<table class="t-dcl-begin">
|
|
<tbody>
|
|
<tr class="t-dsc-header">
|
|
<td>
|
|
<div>定义于头文件 <code><a href="cpp-header-iterator.html"><iterator></a></code></div>
|
|
</td>
|
|
<td></td>
|
|
<td></td>
|
|
</tr>
|
|
<tr class="t-dcl t-since-cxx20">
|
|
<td>
|
|
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> F, <span class="kw1">class</span> I1, <span class="kw1">class</span> I2 <span class="sy1">></span><br /></span>
|
|
<p>concept indirect_binary_predicate <span class="sy1">=</span><br />
|
|
std<span class="sy4">::</span><span class="me2">indirectly_readable</span><span class="sy1"><</span>I1<span class="sy1">></span> <span class="sy3">&&</span><br />
|
|
std<span class="sy4">::</span><span class="me2">indirectly_readable</span><span class="sy1"><</span>I2<span class="sy1">></span> <span class="sy3">&&</span><br />
|
|
std<span class="sy4">::</span><span class="me2">copy_constructible</span><span class="sy1"><</span>F<span class="sy1">></span> <span class="sy3">&&</span><br />
|
|
std<span class="sy4">::</span><span class="me2">predicate</span><span class="sy1"><</span>F<span class="sy3">&</span>, std<span class="sy4">::</span><span class="me2">iter_value_t</span><span class="sy1"><</span>I1<span class="sy1">></span><span class="sy3">&</span>, std<span class="sy4">::</span><span class="me2">iter_value_t</span><span class="sy1"><</span>I2<span class="sy1">></span><span class="sy3">&</span><span class="sy1">></span> <span class="sy3">&&</span><br />
|
|
std<span class="sy4">::</span><span class="me2">predicate</span><span class="sy1"><</span>F<span class="sy3">&</span>, std<span class="sy4">::</span><span class="me2">iter_value_t</span><span class="sy1"><</span>I1<span class="sy1">></span><span class="sy3">&</span>, std<span class="sy4">::</span><span class="me2">iter_reference_t</span><span class="sy1"><</span>I2<span class="sy1">>></span> <span class="sy3">&&</span><br />
|
|
std<span class="sy4">::</span><span class="me2">predicate</span><span class="sy1"><</span>F<span class="sy3">&</span>, std<span class="sy4">::</span><span class="me2">iter_reference_t</span><span class="sy1"><</span>I1<span class="sy1">></span>, std<span class="sy4">::</span><span class="me2">iter_value_t</span><span class="sy1"><</span>I2<span class="sy1">></span><span class="sy3">&</span><span class="sy1">></span> <span class="sy3">&&</span><br />
|
|
std<span class="sy4">::</span><span class="me2">predicate</span><span class="sy1"><</span>F<span class="sy3">&</span>, std<span class="sy4">::</span><span class="me2">iter_reference_t</span><span class="sy1"><</span>I1<span class="sy1">></span>, std<span class="sy4">::</span><span class="me2">iter_reference_t</span><span class="sy1"><</span>I2<span class="sy1">>></span> <span class="sy3">&&</span><br /></p>
|
|
std<span class="sy4">::</span><span class="me2">predicate</span><span class="sy1"><</span>F<span class="sy3">&</span>, std<span class="sy4">::</span><span class="me2">iter_common_reference_t</span><span class="sy1"><</span>I1<span class="sy1">></span>, std<span class="sy4">::</span><span class="me2">iter_common_reference_t</span><span class="sy1"><</span>I2<span class="sy1">>></span><span class="sy4">;</span></div>
|
|
</td>
|
|
<td class="t-dcl-nopad"></td>
|
|
<td><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></td>
|
|
</tr>
|
|
<tr class="t-dcl-sep">
|
|
<td></td>
|
|
<td></td>
|
|
<td></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p>概念 <code>indirect_binary_predicate</code> 指定调用作为其参数的二元谓词的算法的要求。此概念与 <span class="t-lc">std::predicate</span> 的关键区别是它被应用到 <code>I1</code> 与 <code>I2</code> 所引用的类型，而非 <code>I1</code> 与 <code>I2</code> 自身。</p>
|
|
<h3><span class="mw-headline" id=".E8.AF.AD.E4.B9.89.E8.A6.81.E6.B1.82">语义要求</span></h3>
|
|
<p><code>F</code> 、 <code>I1</code> 与 <code>I2</code> 实现 <code>indirect_binary_predicate</code> 仅若其所蕴含的所有概念均得到实现。</p>
|
|
</div>
|
|
<div class="visualClear"></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|