56 lines
3.7 KiB
HTML
56 lines
3.7 KiB
HTML
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<title>std::istreambuf_iterator<CharT,Traits>::operator*, operator-></title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_iterator_istreambuf_iterator_operator 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::istreambuf_iterator<CharT,Traits>::</span>operator*, operator-></h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-iterator.html">iterator</a>‎ | <a href="cpp-iterator-istreambuf_iterator.html">istreambuf iterator</a></span></div>
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<div><span class="mw-geshi cpp source-cpp">CharT operator<span class="sy2">*</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span></span></div>
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</td>
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<td>(1)</td>
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<div><span class="mw-geshi cpp source-cpp">pointer operator<span class="sy2">-</span><span class="sy1">></span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</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-cxx11">(C++11 起)</span><br />
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<span class="t-mark-rev t-until-cxx17">(C++17 前)</span></td>
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<td></td>
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<p>以调用 <span class="t-c"><span class="mw-geshi cpp source-cpp">sbuf_<span class="sy2">-</span><span class="sy1">></span>sgetc<span class="br0">(</span><span class="br0">)</span></span></span> 读取单个字符，其中 <span class="t-c"><span class="mw-geshi cpp source-cpp">sbuf_</span></span> 是存储的指向流缓冲的指针。</p>
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<p>若迭代器是流尾迭代器则行为未定义。</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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<p>（无）</p>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">返回值</span></h3>
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<div class="t-li1"><span class="t-li">1)</span> 获得字符的值。</div>
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<div class="t-li1"><span class="t-li">2)</span> 未指定类型对象，满足给定一个 istreambuf_iterator <code>i</code> ，表达式 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="br0">(</span><span class="sy2">*</span>i<span class="br0">)</span>.<span class="me1">m</span></span></span> 与 <span class="t-c"><span class="mw-geshi cpp source-cpp">i<span class="sy2">-</span><span class="sy1">></span>m</span></span> 拥有相同效果。</div>
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<h3><span class="mw-headline" id=".E5.BC.82.E5.B8.B8">异常</span></h3>
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<p>可能抛出实现定义的异常。</p>
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