65 lines
3.9 KiB
HTML
65 lines
3.9 KiB
HTML
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_iterator_indirectly_comparable skin-cppreference2 action-view cpp-navbar">
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>indirectly_comparable</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-iterator.html">iterator</a></span></div>
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<div>定义于头文件 <code><a href="cpp-header-iterator.html"><iterator></a></code></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> I1, <span class="kw1">class</span> I2, <span class="kw1">class</span> R,<br /></span>
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<p> <span class="kw1">class</span> P1 <span class="sy1">=</span> std<span class="sy4">::</span><span class="me2">identity</span>, <span class="kw1">class</span> P2 <span class="sy1">=</span> std<span class="sy4">::</span><span class="me2">identity</span> <span class="sy1">></span><br />
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concept indirectly_comparable <span class="sy1">=</span><br /></p>
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std<span class="sy4">::</span><span class="me2">indirect_binary_predicate</span><span class="sy1"><</span>R, std<span class="sy4">::</span><span class="me2">projected</span><span class="sy1"><</span>I1, P1<span class="sy1">></span>, std<span class="sy4">::</span><span class="me2">projected</span><span class="sy1"><</span>I2, P2<span class="sy1">>></span><span class="sy4">;</span></div>
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<td><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></td>
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<p>概念 <code>indirectly_comparable</code> 指定横跨二个独立范围比较值的基础算法要求。</p>
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<h3><span class="mw-headline" id=".E8.AF.AD.E4.B9.89.E8.A6.81.E6.B1.82">语义要求</span></h3>
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<p><code>indirectly_comparable</code> 仅若其所蕴含的概念均被实现才得到实现。</p>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
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<div><a href="cpp-iterator-indirect_binary_predicate.html"><span class="t-lines"><span>indirect_binary_predicate</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
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<td>指定可调用类型，在以解引用两个 <a href="cpp-iterator-indirectly_readable.html"><code>indirectly_readable</code></a> 类型的结果进行调用时，满足 <a href="cpp-concepts-predicate.html"><code>predicate</code></a><br />
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<span class="t-mark">(概念)</span></td>
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