209 lines
9.5 KiB
HTML
209 lines
9.5 KiB
HTML
<!DOCTYPE html>
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<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
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<title>std::chrono::year</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_chrono_year 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>year</h1>
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<div id="bodyContent">
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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 id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
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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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<td></td>
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<td></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">class</span> year<span class="sy4">;</span></span></div>
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<td class="t-dcl-nopad"></td>
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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>year</code> 表示<a href="https://en.wikipedia.org/wiki/proleptic_Gregorian_calendar" class="extiw" title="enwiki:proleptic Gregorian calendar">外推格里高利历</a>中的年份。其范围是 [-32767, 32767] 。</p>
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<p><code>year</code> 是<a href="cpp-named_req-TriviallyCopyable.html"><span style="font-style:italic">可平凡复制</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(TriviallyCopyable)</span></a> 的<a href="cpp-named_req-StandardLayoutType.html"><span style="font-style:italic">标准布局类型</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(StandardLayoutType)</span></a> 。</p>
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<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E5.87.BD.E6.95.B0">成员函数</span></h3>
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<div><a href="cpp-chrono-year-year.html"><span class="t-lines"><span>(构造函数)</span></span></a></div>
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<td>构造 <code>year</code><br />
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<span class="t-mark">(公开成员函数)</span></td>
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<div><a href="cpp-chrono-year-operator_inc_dec.html"><span class="t-lines"><span>operator++</span><span>operator++<span class="t-dsc-small">(int)</span></span><span>operator--</span><span>operator--<span class="t-dsc-small">(int)</span></span></span></a></div>
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</div>
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</td>
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<td>自增或自减 <code>year</code><br />
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<span class="t-mark">(公开成员函数)</span></td>
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<tr class="t-dsc">
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<div class="t-dsc-member-div">
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<div><a href="cpp-chrono-year-operator_arith.html"><span class="t-lines"><span>operator+=</span><span>operator-=</span></span></a></div>
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</td>
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<td>从 <code>year</code> 加上或减去年数<br />
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<span class="t-mark">(公开成员函数)</span></td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-chrono-year-operator_sign.html"><span class="t-lines"><span>operator+</span><span>operator-</span></span></a></div>
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<td>应用一元运算符到 <code>year</code><br />
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<span class="t-mark">(公开成员函数)</span></td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-chrono-year-is_leap.html"><span class="t-lines"><span>is_leap</span></span></a></div>
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</td>
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<td>确定该年是否为闰年<br />
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<span class="t-mark">(公开成员函数)</span></td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-chrono-year-operator_int.html"><span class="t-lines"><span>operator int</span></span></a></div>
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</td>
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<td>取得年份值<br />
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<span class="t-mark">(公开成员函数)</span></td>
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</tr>
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<tr class="t-dsc">
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<div class="t-dsc-member-div">
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<div><a href="cpp-chrono-year-ok.html"><span class="t-lines"><span>ok</span></span></a></div>
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</div>
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</td>
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<td>检查存储的年份值是否合法<br />
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<span class="t-mark">(公开成员函数)</span></td>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-chrono-year-min.html"><span class="t-lines"><span>min</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[静态]</span></span></span></div>
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</td>
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<td>返回最小的可能的 year 值<br />
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<span class="t-mark">(公开静态成员函数)</span></td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-chrono-year-max.html"><span class="t-lines"><span>max</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[静态]</span></span></span></div>
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</td>
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<td>返回最大的可能的 <code>year</code><br />
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<span class="t-mark">(公开静态成员函数)</span></td>
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</table>
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<p><br /></p>
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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">非成员函数</span></h3>
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<table class="t-dsc-begin">
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<div><a href="cpp-chrono-year-operator_cmp.html"><span class="t-lines"><span>operator==</span><span>operator<=></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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</div>
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</td>
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<td>比较二个 <code>year</code> 值<br />
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<span class="t-mark">(函数)</span></td>
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</tr>
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<tr class="t-dsc">
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<div class="t-dsc-member-div">
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<div><a href="cpp-chrono-year-operator_arith_2.html"><span class="t-lines"><span>operator+</span><span>operator-</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>
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<td>进行 <code>year</code> 上的算术<br />
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<span class="t-mark">(函数)</span></td>
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<tr class="t-dsc">
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<div class="t-dsc-member-div">
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<div><a href="cpp-chrono-year-operator_ltlt.html"><span class="t-lines"><span>operator<<</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>
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<td>输出 <code>year</code> 到流<br />
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<span class="t-mark">(函数模板)</span></td>
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<tr class="t-dsc">
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<div class="t-dsc-member-div">
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<div><a href="cpp-chrono-year-from_stream.html"><span class="t-lines"><span>from_stream</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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</div>
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</td>
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<td>按照提供的格式从流分析 <code>year</code><br />
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<span class="t-mark">(函数模板)</span></td>
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</table>
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<h3><span class="mw-headline" id=".E8.BE.85.E5.8A.A9.E7.B1.BB">辅助类</span></h3>
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<div><a href="cpp-chrono-year-formatter.html"><span class="t-lines"><span>std::formatter<span class="t-dsc-small"><std::chrono::year></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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</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>year</code><br />
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<span class="t-mark">(类模板特化)</span></td>
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<h3><span class="mw-headline" id=".E5.AD.97.E9.9D.A2.E9.87.8F">字面量</span></h3>
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<td colspan="2">
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<div>定义于内联命名空间 <code>std::literals::chrono_literals</code></div>
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<tr class="t-dsc">
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<div class="t-dsc-member-div">
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<div><a href="cpp-chrono-operator_22_22y.html"><span class="t-lines"><span>operator""y</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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</div>
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</td>
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<td>表示特定年的 <span class="t-lc">std::chrono::year</span> 字面量<br />
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<span class="t-mark">(函数)</span></td>
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</table>
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</div>
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<div class="visualClear"></div>
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