123 lines
6.1 KiB
HTML
123 lines
6.1 KiB
HTML
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<title>std::chrono::local_t</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_chrono_local_t 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::chrono::</span>local_t</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-chrono.html">chrono</a></span></div>
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<div>定义于头文件 <code><a href="cpp-header-chrono.html"><chrono></a></code></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">struct</span> local_t <span class="br0">{</span><span class="br0">}</span><span class="sy4">;</span></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>类 <code>local_t</code> 是用作 <span class="t-lc"><a href="cpp-chrono-time_point.html">std::chrono::time_point</a></span> 的第一模板实参的伪时钟，用于指定指示时间点表示相对于仍未指定的时区的本地时间。 <code>local_time</code> 支持流操作和时间点算术的全集。</p>
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<h3><span class="mw-headline" id=".E6.97.B6.E9.97.B4.E7.82.B9.E6.97.8F">时间点族</span></h3>
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<div>定义于命名空间 <code>std::chrono</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> Duration<span class="sy1">></span><br />
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<span class="kw1">using</span> local_time <span class="sy1">=</span> <a href="cpp-chrono-time_point.html"><span class="kw991">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">time_point</span></span></a><span class="sy1"><</span>std<span class="sy4">::</span><span class="me2">chrono</span><span class="sy4">::</span><span class="me2">local_t</span>, Duration<span class="sy1">></span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">using</span> local_seconds <span class="sy1">=</span> local_time<span class="sy1"><</span><a href="cpp-chrono-duration.html"><span class="kw997">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">seconds</span></span></a><span class="sy1">></span><span class="sy4">;</span></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">using</span> local_days <span class="sy1">=</span> local_time<span class="sy1"><</span>std<span class="sy4">::</span><span class="me2">chrono</span><span class="sy4">::</span><span class="me2">days</span><span class="sy1">></span><span class="sy4">;</span></span></div>
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<div><a href="cpp-chrono-local_t-operator_ltlt.html"><span class="t-lines"><span>operator<<<span class="t-dsc-small">(std::chrono::local_time)</span></span></span></a></div>
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<td>进行 local_time 上的流输出<br />
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<span class="t-mark">(函数模板)</span></td>
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<div><a href="cpp-chrono-local_t-from_stream.html"><span class="t-lines"><span>from_stream<span class="t-dsc-small">(std::chrono::local_time)</span></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>按照给定的格式从流分析 local_time<br />
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<span class="t-mark">(函数模板)</span></td>
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<div><a href="cpp-chrono-local_t-formatter.html"><span class="t-lines"><span>std::formatter<span class="t-dsc-small"><std::chrono::local_time></span></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><span class="t-lc">std::formatter</span> 的特化，按照提供的格式格式化 <code>local_time</code><br />
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<span class="t-mark">(类模板特化)</span></td>
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