78 lines
5.3 KiB
HTML
78 lines
5.3 KiB
HTML
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<title>std::make_format_args, std::make_wformat_args</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>make_format_args, <span style="font-size:0.7em; line-height:130%">std::</span>make_wformat_args</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-utility.html">utility</a>‎ | <a href="cpp-utility-format.html">format</a></span></div>
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<table class="t-dcl-begin">
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<div>定义于头文件 <code><a href="cpp-header-format.html"><format></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> Context <span class="sy1">=</span> std<span class="sy4">::</span><span class="me2">format_context</span>, <span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span><br />
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<span class="coMULTI">/*format-arg-store*/</span><span class="sy1"><</span>Context, Args...<span class="sy1">></span> make_format_args<span class="br0">(</span><span class="kw4">const</span> Args<span class="sy3">&</span>... <span class="me1">args</span><span class="br0">)</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"><span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span><br />
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<span class="coMULTI">/*format-arg-store*/</span><span class="sy1"><</span>std<span class="sy4">::</span><span class="me2">wformat_context</span>, Args...<span class="sy1">></span> make_wformat_args<span class="br0">(</span><span class="kw4">const</span> Args<span class="sy3">&</span>... <span class="me1">args</span><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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<p>返回存储格式化参数的数组，并可隐式转换到 <span class="t-lc">std::basic_format_args<Context></span> 的对象。</p>
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<p>若对 <code>Args</code> 中的任何 <code>Ti</code> ， <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">typename</span> Context<span class="sy4">::</span><span class="kw1">template</span> formatter_type<span class="sy1"><</span>Ti<span class="sy1">></span></span></span> 不满足<a href="cpp-named_req-Formatter.html"><span style="font-style:italic">格式化器</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(Formatter)</span></a> 要求，则行为未定义。</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>args...</td>
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<td>-</td>
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<td>用作格式化参数的值</td>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E">返回</span></h3>
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<p>保有格式化参数的对象。</p>
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<h3><span class="mw-headline" id=".E6.B3.A8.E8.A7.A3">注解</span></h3>
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<p>格式化参数对用户定义类型拥有引用语义而且不延长 <code>args</code> 的生命期。程序员负责确保 <code>args</code> 比返回值存活更久。通常结果仅用作格式化函数的参数。</p>
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<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
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<td class="mbox-text" style="">本节未完成<br />
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原因：暂无示例</td>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
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