98 lines
6.7 KiB
HTML
98 lines
6.7 KiB
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::basic_filebuf<CharT,Traits>::basic_filebuf</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_io_basic_filebuf_basic_filebuf 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::basic_filebuf<CharT,Traits>::</span>basic_filebuf</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-io.html">io</a>‎ | <a href="cpp-io-basic_filebuf.html">basic filebuf</a></span></div>
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<div><span class="mw-geshi cpp source-cpp">basic_filebuf<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span></span></div>
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</td>
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<td>(1)</td>
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<td class="t-dcl-nopad"></td>
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<tr class="t-dcl t-since-cxx11">
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<div><span class="mw-geshi cpp source-cpp">basic_filebuf<span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-io-basic_filebuf.html"><span class="kw1667">std::<span class="me2">basic_filebuf</span></span></a><span class="sy3">&</span> rhs <span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span></span></div>
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</td>
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<td>(2)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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<div><span class="mw-geshi cpp source-cpp">basic_filebuf<span class="br0">(</span> <a href="cpp-io-basic_filebuf.html"><span class="kw1667">std::<span class="me2">basic_filebuf</span></span></a><span class="sy3">&&</span> rhs <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(3)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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<td></td>
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<td></td>
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<td></td>
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<p>构造新的 <code>std::basic_filebuf</code> 对象。</p>
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<div class="t-li1"><span class="t-li">1)</span> 构造 <code>std::basic_filebuf</code> 对象，以调用 <span class="t-lc"><a href="cpp-io-basic_streambuf.html">std::basic_streambuf</a></span> 的默认构造函数初始化基类。创建的 <code>basic_filebuf</code> 不与文件关联，而 <span class="t-lc"><a href="cpp-io-basic_filebuf-is_open.html">is_open()</a></span> 返回 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span> 。</div>
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<div class="t-li1"><span class="t-li">2)</span> 复制构造函数被删除； <code>std::basic_filebuf</code> 非<a href="cpp-named_req-CopyConstructible.html"><span style="font-style:italic">可复制构造</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(CopyConstructible)</span></a> 。</div>
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<div class="t-li1"><span class="t-li">3)</span> 通过从另一 <code>std::basic_filebuf</code> 对象 <code>rhs</code> 移动所有内容，包含缓冲区、关联的文件、 locale 、打开模式、 is_open 变量和所有其他状态移动构造 <code>std::basic_filebuf</code> 对象。移动后， <code>rhs</code> 不与文件关联且 <span class="t-c"><span class="mw-geshi cpp source-cpp">rhs.<span class="me1">is_open</span><span class="br0">(</span><span class="br0">)</span><span class="sy1">==</span><span class="kw2">false</span></span></span> 。保证 <code>rhs</code> 的基类和 <code>*this</code> 的基类 <span class="t-lc"><a href="cpp-io-basic_streambuf.html">std::basic_streambuf</a></span> 的成员指针指向不同缓冲区，除非它们为空。</div>
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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>rhs</td>
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<td>-</td>
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<td>另一 <code>basic_filebuf</code></td>
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<h3><span class="mw-headline" id=".E6.B3.A8.E6.84.8F">注意</span></h3>
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<p>典型地为 <span class="t-lc"><a href="cpp-io-basic_fstream.html">std::basic_fstream</a></span> 的构造函数所调用。</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-empty-cell"></td>
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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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<div><a href="cpp-io-basic_filebuf-operator=.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-cxx11">(C++11)</span></span></span></div>
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</td>
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<td>赋值 basic_filebuf 对象<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><a href="cpp-io-basic_filebuf-~basic_filebuf.html"><span class="t-lines"><span>(析构函数)</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>析构 basic_filebuf 对象并且若打开则关闭文件<br />
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<span class="t-mark">(虚公开成员函数)</span></td>
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</tr>
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</table>
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