59 lines
4.9 KiB
HTML
59 lines
4.9 KiB
HTML
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<title>std::chrono::zoned_time<Duration,TimeZonePtr>::operator=</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::chrono::zoned_time<Duration,TimeZonePtr>::</span>operator=</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-chrono.html">chrono</a>‎ | <a href="cpp-chrono-zoned_time.html">zoned time</a></span></div>
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<div><span class="mw-geshi cpp source-cpp">zoned_time<span class="sy3">&</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> zoned_time<span class="sy3">&</span> other<span class="br0">)</span> <span class="sy1">=</span> <span class="kw1">default</span><span class="sy4">;</span></span></div>
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<td>(1)</td>
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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">zoned_time<span class="sy3">&</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> std<span class="sy4">::</span><span class="me2">chrono</span><span class="sy4">::</span><span class="me2">sys_time</span><span class="sy1"><</span>Duration<span class="sy1">></span><span class="sy3">&</span> other<span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(2)</td>
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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">zoned_time<span class="sy3">&</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> std<span class="sy4">::</span><span class="me2">chrono</span><span class="sy4">::</span><span class="me2">local_time</span><span class="sy1"><</span>Duration<span class="sy1">></span><span class="sy3">&</span> other<span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(3)</td>
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<td><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></td>
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<p>赋 <code>other</code> 的值给 <code>*this</code> 。</p>
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<div class="t-li1"><span class="t-li">1)</span> 默认化的复制赋值运算符。复制赋值存储的时间点及存储的时区指针。 <code>zoned_time</code> 无移动赋值运算符；移动即是复制。</div>
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<div class="t-li1"><span class="t-li">2)</span> 赋值 <code>other</code> 给存储的时间点。不更改时区指针。调用后 <span class="t-c"><span class="mw-geshi cpp source-cpp">get_sys_time<span class="br0">(</span><span class="br0">)</span> <span class="sy1">==</span> other</span></span> 。</div>
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<div class="t-li1"><span class="t-li">3)</span> 如同用 <span class="t-c"><span class="mw-geshi cpp source-cpp">zone<span class="sy2">-</span><span class="sy1">></span>to_sys<span class="br0">(</span>other<span class="br0">)</span></span></span> 转换 <code>other</code> 为 <span class="t-lc">std::chrono::sys_time</span> （其中 <code>zone</code> 是保有存储的时区指针的非静态数据成员）再赋值结果给存储的时间点。不更改时区指针。调用后 <span class="t-c"><span class="mw-geshi cpp source-cpp">get_local_time<span class="br0">(</span><span class="br0">)</span> <span class="sy1">==</span> other</span></span> 。</div>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">返回值</span></h3>
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<p><code>*this</code> 。</p>
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