430 lines
24 KiB
HTML
430 lines
24 KiB
HTML
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<title>std::moneypunct_byname</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_locale_moneypunct_byname 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::</span>moneypunct_byname</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-locale.html">locale</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-locale.html"><locale></a></code></div>
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<td></td>
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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> CharT, <span class="kw4">bool</span> Intl <span class="sy1">=</span> <span class="kw2">false</span> <span class="sy1">></span><br />
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<span class="kw1">class</span> moneypunct_byname <span class="sy4">:</span> <span class="kw1">public</span> <a href="cpp-locale-moneypunct.html"><span class="kw1972">std::<span class="me2">moneypunct</span></span></a><span class="sy1"><</span>CharT, Intl<span class="sy1">></span><span class="sy4">;</span></span></div>
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<p><span class="t-lc"><strong class="selflink">std::moneypunct_byname</strong></span> 是 <span class="t-lc"><a href="cpp-locale-moneypunct.html">std::moneypunct</a></span> 平面,封装在其构造时指定的 locale 的货币格式化偏好。</p>
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<p>标准库提供二个特化</p>
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<table class="t-dsc-begin">
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<td colspan="2">
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<div>定义于头文件 <code><a href="cpp-header-locale.html"><locale></a></code></div>
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</td>
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</tr>
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<td><span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">moneypunct_byname</span><span class="sy1"><</span><span class="kw4">char</span>, Intl<span class="sy1">></span></span></span></td>
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<td>窄字符 I/O 的本地环境限定 <span class="t-lc"><a href="cpp-locale-moneypunct.html">std::moneypunct</a></span> 平面</td>
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<td><span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">moneypunct_byname</span><span class="sy1"><</span><span class="kw4">wchar_t</span>, Intl<span class="sy1">></span></span></span></td>
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<td>宽字符 I/O 的本地环境限定 <span class="t-lc"><a href="cpp-locale-moneypunct.html">std::moneypunct</a></span> 平面</td>
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</table>
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<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E7.B1.BB.E5.9E.8B">成员类型</span></h3>
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<td>成员类型</td>
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<td>定义</td>
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<td><code>pattern</code></td>
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<td><span class="t-lc"><a href="cpp-locale-money_base.html">std::money_base::pattern</a></span></td>
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<td><code>string_type</code></td>
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<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-string-basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1"><</span>CharT<span class="sy1">></span></span></span></td>
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</table>
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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 class="t-dsc-member-div t-dsc-member-nobold-div">
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<div><strong class="selflink"><span class="t-lines"><span>(构造函数)</span></span></strong></div>
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</div>
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</td>
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<td>构造新的 <code>moneypunct_byname</code> 平面<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 t-dsc-member-nobold-div">
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<div><strong class="selflink"><span class="t-lines"><span>(析构函数)</span></span></strong></div>
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</div>
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</td>
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<td>析构 <code>moneypunct_byname</code> 平面<br />
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<span class="t-mark">(受保护成员函数)</span></td>
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</table>
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<div class="t-template-editlink" style=""></div>
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<h2><span class="mw-headline" id="std::moneypunct_byname::moneypunct_byname"><span style="font-size:0.7em; line-height:130%">std::moneypunct_byname::</span>moneypunct_byname</span></h2>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">explicit</span> moneypunct_byname<span class="br0">(</span> <span class="kw4">const</span> <span class="kw4">char</span><span class="sy2">*</span> name, <a href="cpp-types-size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> refs <span class="sy1">=</span> <span class="nu0">0</span> <span class="br0">)</span><span class="sy4">;</span></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">explicit</span> moneypunct_byname<span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-string-basic_string.html"><span class="kw1230">std::<span class="me2">string</span></span></a><span class="sy3">&</span> name, <a href="cpp-types-size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> refs <span class="sy1">=</span> <span class="nu0">0</span> <span class="br0">)</span><span class="sy4">;</span></span></div>
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</td>
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<td class="t-dcl-nopad"></td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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<p>为名为 <code>name</code> 的本地环境构造新的 <code>std::moneypunct_byname</code> 平面。</p>
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<p><code>refs</code> 用于资源管理:在销毁最后一个保有平面的 <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-locale-locale.html"><span class="kw1894">std::<span class="me2">locale</span></span></a></span></span> 对象时,若 <span class="t-c"><span class="mw-geshi cpp source-cpp">refs <span class="sy1">==</span> <span class="nu0">0</span></span></span> ,则实现销毁平面对象。否则,不销毁对象。</p>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<td>name</td>
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<td>-</td>
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<td>本地环境的名称</td>
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<tr class="t-par">
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<td>refs</td>
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<td>-</td>
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<td>链接到该平面的引用数</td>
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<div class="t-template-editlink" style=""></div>
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<div class="t-member">
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<h2><span class="mw-headline" id="std::moneypunct_byname::.7Emoneypunct_byname"><span style="font-size:0.7em; line-height:130%">std::moneypunct_byname::</span>~moneypunct_byname</span></h2>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">protected</span><span class="sy4">:</span><br />
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~moneypunct_byname<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span></span></div>
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</td>
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<td class="t-dcl-nopad"></td>
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<td></td>
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<td></td>
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<td></td>
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<p>销毁平面。</p>
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</div>
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<div class="t-template-editlink" style=""></div>
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<div class="t-inherited">
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<h2><span class="mw-headline" id=".E7.BB.A7.E6.89.BF.E8.87.AA_std::moneypunct">继承自 <a href="cpp-locale-moneypunct.html"><span style="font-size:0.7em; line-height:130%">std::</span>moneypunct</a></span></h2>
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<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E7.B1.BB.E5.9E.8B_2">成员类型</span></h3>
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<table class="t-dsc-begin">
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<tr class="t-dsc-hitem">
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<td>成员类型</td>
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<td>定义</td>
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<tr class="t-dsc">
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<td><code>char_type</code></td>
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<td><code>CharT</code></td>
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<tr class="t-dsc">
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<td><code>string_type</code></td>
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<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-string-basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1"><</span>CharT<span class="sy1">></span></span></span></td>
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</table>
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<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E5.87.BD.E6.95.B0_2">成员函数</span></h3>
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<table class="t-dsc-begin">
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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-locale-moneypunct-decimal_point.html"><span class="t-lines"><span>decimal_point</span></span></a></div>
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</div>
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</td>
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<td>调用 <code>do_decimal_point</code><br />
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<span class="t-mark">(<code>std::moneypunct<CharT,International></code> 的公开成员函数)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-locale-moneypunct-thousands_sep.html"><span class="t-lines"><span>thousands_sep</span></span></a></div>
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</div>
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</td>
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<td>调用 <code>do_thousands_sep</code><br />
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<span class="t-mark">(<code>std::moneypunct<CharT,International></code> 的公开成员函数)</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-locale-moneypunct-grouping.html"><span class="t-lines"><span>grouping</span></span></a></div>
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</div>
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</td>
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<td>调用 <code>do_grouping</code><br />
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<span class="t-mark">(<code>std::moneypunct<CharT,International></code> 的公开成员函数)</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-locale-moneypunct-curr_symbol.html"><span class="t-lines"><span>curr_symbol</span></span></a></div>
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</div>
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</td>
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<td>调用 <code>do_curr_symbol</code><br />
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<span class="t-mark">(<code>std::moneypunct<CharT,International></code> 的公开成员函数)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-locale-moneypunct-positive_sign.html"><span class="t-lines"><span>positive_sign</span><span>negative_sign</span></span></a></div>
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</div>
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</td>
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<td>调用 <code>do_positive_sign</code> 或 <code>do_negative_sign</code><br />
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<span class="t-mark">(<code>std::moneypunct<CharT,International></code> 的公开成员函数)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-locale-moneypunct-frac_digits.html"><span class="t-lines"><span>frac_digits</span></span></a></div>
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</div>
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</td>
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<td>调用 <code>do_frac_digits</code><br />
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<span class="t-mark">(<code>std::moneypunct<CharT,International></code> 的公开成员函数)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-locale-moneypunct-pos_format.html"><span class="t-lines"><span>pos_format</span><span>neg_format</span></span></a></div>
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</div>
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</td>
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<td>调用 <code>do_pos_format</code>/<code>do_neg_format</code><br />
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<span class="t-mark">(<code>std::moneypunct<CharT,International></code> 的公开成员函数)</span></td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E5.8F.97.E4.BF.9D.E6.8A.A4.E6.88.90.E5.91.98.E5.87.BD.E6.95.B0">受保护成员函数</span></h3>
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<table class="t-dsc-begin">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-locale-moneypunct-decimal_point.html"><span class="t-lines"><span>do_decimal_point</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[虚]</span></span></span></div>
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</div>
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</td>
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<td>提供用作小数点的字符<br />
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<span class="t-mark">(<code>std::moneypunct<CharT,International></code> 的虚受保护成员函数)</span></td>
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</tr>
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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-locale-moneypunct-thousands_sep.html"><span class="t-lines"><span>do_thousands_sep</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[虚]</span></span></span></div>
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</div>
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</td>
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<td>提供用作千分隔符的字符<br />
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<span class="t-mark">(<code>std::moneypunct<CharT,International></code> 的虚受保护成员函数)</span></td>
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</tr>
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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-locale-moneypunct-grouping.html"><span class="t-lines"><span>do_grouping</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[虚]</span></span></span></div>
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</div>
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</td>
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<td>提供二个千分隔符间的位数<br />
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<span class="t-mark">(<code>std::moneypunct<CharT,International></code> 的虚受保护成员函数)</span></td>
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</tr>
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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-locale-moneypunct-curr_symbol.html"><span class="t-lines"><span>do_curr_symbol</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[虚]</span></span></span></div>
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</div>
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</td>
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<td>提供用作通货标识符的字符串<br />
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<span class="t-mark">(<code>std::moneypunct<CharT,International></code> 的虚受保护成员函数)</span></td>
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</tr>
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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-locale-moneypunct-positive_sign.html"><span class="t-lines"><span>do_positive_sign</span><span>do_negative_sign</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[虚]</span></span></span></div>
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</div>
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</td>
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<td>提供指示正或负值的字符串<br />
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<span class="t-mark">(<code>std::moneypunct<CharT,International></code> 的虚受保护成员函数)</span></td>
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</tr>
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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-locale-moneypunct-frac_digits.html"><span class="t-lines"><span>do_frac_digits</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[虚]</span></span></span></div>
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</div>
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</td>
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<td>提供小数点后要显示的位数<br />
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<span class="t-mark">(<code>std::moneypunct<CharT,International></code> 的虚受保护成员函数)</span></td>
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</tr>
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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-locale-moneypunct-pos_format.html"><span class="t-lines"><span>do_pos_format</span><span>do_neg_format</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[虚]</span></span></span></div>
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</div>
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</td>
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<td>提供通货值的格式化模式<br />
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<span class="t-mark">(<code>std::moneypunct<CharT,International></code> 的虚受保护成员函数)</span></td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E5.B8.B8.E9.87.8F">成员常量</span></h3>
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<table class="t-dsc-begin">
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<tr class="t-dsc-hitem">
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<td>成员</td>
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<td>定义</td>
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</tr>
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<tr class="t-dsc">
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<td><span class="t-dsc-small">const bool</span> <code>intl</code> <span class="t-cmark">[静态]</span></td>
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<td><code>International</code></td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E5.AF.B9.E8.B1.A1">成员对象</span></h3>
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<table class="t-dsc-begin">
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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><span class="t-lines"><span><span class="t-dsc-small">static std::locale::id</span> id</span></span></div>
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</div>
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</td>
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<td>locale 的 <i>id</i><br />
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<span class="t-mark">(公开成员对象)</span></td>
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</tr>
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</table>
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</div>
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<div class="t-template-editlink" style=""></div>
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<div class="t-inherited">
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<h2><span class="mw-headline" id=".E7.BB.A7.E6.89.BF.E8.87.AA_std::money_base">继承自 <a href="cpp-locale-money_base.html"><span style="font-size:0.7em; line-height:130%">std::</span>money_base</a></span></h2>
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<table class="t-dsc-begin">
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<tr class="t-dsc-hitem">
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<td>成员类型</td>
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<td>定义</td>
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</tr>
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<tr class="t-dsc">
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<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">enum</span> part <span class="br0">{</span> none, space, symbol, sign, value <span class="br0">}</span><span class="sy4">;</span></span></span></td>
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<td>无作用域枚举类型</td>
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</tr>
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<tr class="t-dsc">
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<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">struct</span> pattern <span class="br0">{</span> <span class="kw4">char</span> field<span class="br0">[</span><span class="nu0">4</span><span class="br0">]</span><span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></span></span></td>
|
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<td>货币格式类型</td>
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</tr>
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</table>
|
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<table class="t-dsc-begin">
|
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<tr class="t-dsc-hitem">
|
|
<td>枚举常量</td>
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<td>解释</td>
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</tr>
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<tr class="t-dsc">
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<td><code>none</code></td>
|
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<td>容许但不要求空白符,除了在末位置不容许空白符</td>
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</tr>
|
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<tr class="t-dsc">
|
|
<td><code>space</code></td>
|
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<td>要求一或多个空白字符</td>
|
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</tr>
|
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<tr class="t-dsc">
|
|
<td><code>symbol</code></td>
|
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<td>要求 moneypunct::curr_symbol 所返回的字符序列</td>
|
|
</tr>
|
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<tr class="t-dsc">
|
|
<td><code>sign</code></td>
|
|
<td>要求 moneypunct::positive_sign 或 moneypunct::negative_sign 所返回的首个字符</td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td><code>value</code></td>
|
|
<td>要求绝对数值货币值</td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
|
|
<div class="t-example">
|
|
<p>此示例演示如何应用另一语言的货币格式化规则而不更改 locale 的剩余部分。</p>
|
|
<div class="t-example-live-link"></div>
|
|
<div dir="ltr" class="mw-geshi" style="text-align: left;">
|
|
<div class="cpp source-cpp">
|
|
<pre class="de1"><span class="co2">#include <iostream></span>
|
|
<span class="co2">#include <iomanip></span>
|
|
<span class="co2">#include <locale></span>
|
|
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
|
|
<span class="br0">{</span>
|
|
<span class="kw4">long</span> <span class="kw4">double</span> mon <span class="sy1">=</span> <span class="nu0">1234567</span><span class="sy4">;</span>
|
|
std<span class="sy4">::</span><span class="me2">locale</span><span class="sy4">::</span><span class="me2">global</span><span class="br0">(</span><a href="cpp-locale-locale.html"><span class="kw1894">std::<span class="me2">locale</span></span></a><span class="br0">(</span><span class="st0">"en_US.utf8"</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
|
|
<a href="cpp-io-cout.html"><span class="kw1759">std::<span class="me2">wcout</span></span></a>.<span class="me1">imbue</span><span class="br0">(</span><a href="cpp-locale-locale.html"><span class="kw1894">std::<span class="me2">locale</span></span></a><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
|
|
<a href="cpp-io-cout.html"><span class="kw1759">std::<span class="me2">wcout</span></span></a> <span class="sy1"><<</span> L<span class="st0">"american locale : "</span> <span class="sy1"><<</span> <a href="cpp-io-manip-showbase.html"><span class="kw1766">std::<span class="me2">showbase</span></span></a>
|
|
<span class="sy1"><<</span> <a href="cpp-io-manip-put_money.html"><span class="kw1799">std::<span class="me2">put_money</span></span></a><span class="br0">(</span>mon<span class="br0">)</span> <span class="sy1"><<</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
|
|
<a href="cpp-io-cout.html"><span class="kw1759">std::<span class="me2">wcout</span></span></a>.<span class="me1">imbue</span><span class="br0">(</span><a href="cpp-locale-locale.html"><span class="kw1894">std::<span class="me2">locale</span></span></a><span class="br0">(</span><a href="cpp-io-cout.html"><span class="kw1759">std::<span class="me2">wcout</span></span></a>.<span class="me1">getloc</span><span class="br0">(</span><span class="br0">)</span>,
|
|
new std<span class="sy4">::</span><span class="me2">moneypunct_byname</span><span class="sy1"><</span><span class="kw4">wchar_t</span><span class="sy1">></span><span class="br0">(</span><span class="st0">"ru_RU.utf8"</span><span class="br0">)</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
|
|
<a href="cpp-io-cout.html"><span class="kw1759">std::<span class="me2">wcout</span></span></a> <span class="sy1"><<</span> L<span class="st0">"american locale with russian moneypunct: "</span>
|
|
<span class="sy1"><<</span> <a href="cpp-io-manip-put_money.html"><span class="kw1799">std::<span class="me2">put_money</span></span></a><span class="br0">(</span>mon<span class="br0">)</span> <span class="sy1"><<</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
|
|
<span class="br0">}</span></pre></div>
|
|
</div>
|
|
<p>输出:</p>
|
|
<div dir="ltr" class="mw-geshi" style="text-align: left;">
|
|
<div class="text source-text">
|
|
<pre class="de1">american locale : $12,345.67
|
|
american locale with russian moneypunct: 12 345.67 руб</pre></div>
|
|
</div>
|
|
</div>
|
|
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
|
|
<table class="t-dsc-begin">
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="cpp-locale-moneypunct.html"><span class="t-lines"><span>moneypunct</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>定义 <span class="t-lc"><a href="cpp-locale-money_get.html">std::money_get</a></span> 与 <span class="t-lc"><a href="cpp-locale-money_put.html">std::money_put</a></span> 所用的货币格式解析器的参数<br />
|
|
<span class="t-mark">(类模板)</span></td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
<div class="visualClear"></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|