44 lines
3.6 KiB
HTML
44 lines
3.6 KiB
HTML
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<title>std::chrono::tzdb::locate_zone</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::chrono::tzdb::</span>locate_zone</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-tzdb.html">tzdb</a></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">const</span> std<span class="sy4">::</span><span class="me2">chrono</span><span class="sy4">::</span><span class="me2">time_zone</span><span class="sy2">*</span> locate_zone<span class="br0">(</span><a href="cpp-string-basic_string_view.html"><span class="kw1248">std::<span class="me2">string_view</span></span></a> tz_name<span class="br0">)</span> <span class="kw4">const</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>获得指向此数据库中表示 <code>tz_name</code> 所指代的时区的 <span class="t-lc">std::chrono::time_zone</span> 的指针。若 <code>p</code> 是返回的指针，则 <span class="t-c"><span class="mw-geshi cpp source-cpp">p<span class="sy2">-</span><span class="sy1">></span>name<span class="br0">(</span><span class="br0">)</span> <span class="sy1">==</span> tz_name</span></span> 或在此数据库中有一个 <span class="t-lc">std::chrono::time_zone_link</span> <code>l</code> 使得 <span class="t-c"><span class="mw-geshi cpp source-cpp">p<span class="sy2">-</span><span class="sy1">></span>name<span class="br0">(</span><span class="br0">)</span> <span class="sy1">==</span> l.<span class="me1">target</span><span class="br0">(</span><span class="br0">)</span> <span class="sy3">&&</span> l.<span class="me1">name</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">==</span> tz_name</span></span> 。</p>
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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>指向此数据库中表示 <code>tz_name</code> 所指代的时区的 <span class="t-lc">std::chrono::time_zone</span> 的指针。</p>
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<h3><span class="mw-headline" id=".E5.BC.82.E5.B8.B8">异常</span></h3>
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<p>若找不到这种 <code>time_zone</code> 则为 <span class="t-lc"><a href="cpp-error-runtime_error.html">std::runtime_error</a></span> 。</p>
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