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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::chrono::</span>local_info</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-chrono.html">chrono</a></span></div>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-chrono.html">&lt;chrono&gt;</a></code></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">struct</span> local_info<span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
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<p>&#31867; <code>local_info</code> &#25551;&#36848;&#36716;&#25442; <span class="t-lc">std::chrono::local_time</span> &#20026; <span class="t-lc">std::chrono::sys_time</span> &#30340;&#32467;&#26524;&#12290;</p>
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<li>&#33509;&#36716;&#25442;&#32467;&#26524;&#21807;&#19968;&#65292;&#21017; <span class="t-c"><span class="mw-geshi cpp source-cpp">result <span class="sy1">==</span> local_info<span class="sy4">::</span><span class="me2">unique</span></span></span> &#65292;&#20197;&#27491;&#30830;&#30340; <span class="t-lc">std::chrono::sys_info</span> &#22635;&#20805; <code>first</code> &#65292;&#24182;&#38646;&#21021;&#22987;&#21270; <code>second</code> &#12290;</li>
<li>&#33509; <code>local_time</code> &#19981;&#23384;&#22312;&#65292;&#21017; <span class="t-c"><span class="mw-geshi cpp source-cpp">result <span class="sy1">==</span> local_info<span class="sy4">::</span><span class="me2">nonexistent</span></span></span> &#65292;&#20197;&#24688;&#22312; <code>local_time</code> &#21069;&#32467;&#26463;&#30340; <span class="t-lc">std::chrono::sys_info</span> &#22635;&#20805; <code>first</code> &#65292;&#24182;&#20197;&#24688;&#22312; <code>local_time</code> &#21518;&#24320;&#22987;&#30340; <span class="t-lc">std::chrono::sys_info</span> &#22635;&#20805; <code>second</code> &#12290;</li>
<li>&#33509; <code>local_time</code> &#26377;&#27495;&#20041;&#65292;&#21017; <span class="t-c"><span class="mw-geshi cpp source-cpp">result <span class="sy1">==</span> local_info<span class="sy4">::</span><span class="me2">ambiguous</span></span></span> &#65292;&#20197;&#24688;&#22312; <code>local_time</code> &#21518;&#32467;&#26463;&#30340; <span class="t-lc">std::chrono::sys_info</span> &#22635;&#20805; <code>first</code> &#65292;&#24182;&#20197;&#24688;&#22312; <code>local_time</code> &#21069;&#24320;&#22987;&#30340; <span class="t-lc">std::chrono::sys_info</span> &#22635;&#20805; <code>second</code> &#12290;</li>
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<p>&#36825;&#26159;&#20302;&#23618;&#25968;&#25454;&#32467;&#26500;&#65307;&#20174; <code>local_time</code> &#21040; <code>sys_time</code> &#30340;&#20856;&#22411;&#36716;&#25442;&#23558;&#38544;&#24335;&#20351;&#29992;&#23427;&#65292;&#32780;&#38750;&#26174;&#24335;&#12290;</p>
<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E5.B8.B8.E9.87.8F">&#25104;&#21592;&#24120;&#37327;</span></h3>
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<div><span class="t-lines"><span><span class="t-dsc-small">constexpr int</span> unique</span></span></div>
<div><span class="t-lines"><span><span class="t-cmark">[&#38745;&#24577;]</span></span></span></div>
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<td>0<br />
<span class="t-mark">(&#20844;&#24320;&#38745;&#24577;&#25104;&#21592;&#24120;&#37327;)</span></td>
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<div><span class="t-lines"><span><span class="t-dsc-small">constexpr int</span> nonexistent</span></span></div>
<div><span class="t-lines"><span><span class="t-cmark">[&#38745;&#24577;]</span></span></span></div>
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<td>1<br />
<span class="t-mark">(&#20844;&#24320;&#38745;&#24577;&#25104;&#21592;&#24120;&#37327;)</span></td>
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<div><span class="t-lines"><span><span class="t-dsc-small">constexpr int</span> ambiguous</span></span></div>
<div><span class="t-lines"><span><span class="t-cmark">[&#38745;&#24577;]</span></span></span></div>
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<td>2<br />
<span class="t-mark">(&#20844;&#24320;&#38745;&#24577;&#25104;&#21592;&#24120;&#37327;)</span></td>
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<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E5.AF.B9.E8.B1.A1">&#25104;&#21592;&#23545;&#35937;</span></h3>
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<td>&#25104;&#21592;&#23545;&#35937;</td>
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<td><code>result</code></td>
<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw4">int</span></span></span></td>
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<td><code>first</code>, <code>second</code></td>
<td><span class="t-lc">std::chrono::sys_info</span></td>
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<h3><span class="mw-headline" id=".E9.9D.9E.E6.88.90.E5.91.98.E5.87.BD.E6.95.B0">&#38750;&#25104;&#21592;&#20989;&#25968;</span></h3>
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<div><a href="cpp-chrono-local_info-operator_ltlt.html"><span class="t-lines"><span>operator&lt;&lt;</span></span></a></div>
<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>&#36755;&#20986; <code>local_info</code> &#23545;&#35937;&#21040;&#27969;&#20013;<br />
<span class="t-mark">(&#20989;&#25968;&#27169;&#26495;)</span></td>
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<h3><span class="mw-headline" id=".E8.BE.85.E5.8A.A9.E7.B1.BB">&#36741;&#21161;&#31867;</span></h3>
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<div><a href="cpp-chrono-local_info-formatter.html"><span class="t-lines"><span>std::formatter<span class="t-dsc-small">&lt;std::chrono::local_info&gt;</span></span></span></a></div>
<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> &#30340;&#29305;&#21270;&#65292;&#25353;&#29031;&#25552;&#20379;&#30340;&#26684;&#24335;&#26684;&#24335;&#21270; <code>local_info</code><br />
<span class="t-mark">(&#31867;&#27169;&#26495;&#29305;&#21270;)</span></td>
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