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<div><h2 class="title">
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<a name="ostream_string"></a>ostream_string</h2></div>
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<div><div class="authorgroup"><div class="author"><h3 class="author">
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<span class="firstname">Glen</span> <span class="surname">Fernandes</span>
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</h3></div></div></div>
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<div><p class="copyright">Copyright © 2019 Glen Joseph Fernandes</p></div>
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<div><div class="legalnotice">
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<a name="ostream_string.legal"></a><p>
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Distributed under the Boost Software License, Version 1.0.
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</div>
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<div class="toc">
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<p><b>Table of Contents</b></p>
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<dl class="toc">
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<dt><span class="section"><a href="ostream_string.html#ostream_string.overview">Overview</a></span></dt>
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<dt><span class="section"><a href="ostream_string.html#ostream_string.examples">Examples</a></span></dt>
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<dt><span class="section"><a href="ostream_string.html#ostream_string.reference">Reference</a></span></dt>
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<dt><span class="section"><a href="ostream_string.html#ostream_string.history">History</a></span></dt>
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</dl>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
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<a name="ostream_string.overview"></a><a class="link" href="ostream_string.html#ostream_string.overview" title="Overview">Overview</a>
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</h2></div></div></div>
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<p>
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The header <boost/utility/ostream_string.hpp> provides the function template
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<code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">ostream_string</span></code> for formatted output that
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satisfies the requirements of [ostream.formatted.reqmts].
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</p>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
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<a name="ostream_string.examples"></a><a class="link" href="ostream_string.html#ostream_string.examples" title="Examples">Examples</a>
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</h2></div></div></div>
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<p>
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The inserter for class template <code class="computeroutput"><span class="identifier">basic_string_view</span></code>
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could be implemented as follows:
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</p>
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<p>
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</p>
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<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span>
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<span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span>
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<span class="keyword">operator</span><span class="special"><<(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">os</span><span class="special">,</span>
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<span class="keyword">const</span> <span class="identifier">basic_string_view</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">str</span><span class="special">)</span>
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<span class="special">{</span>
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<span class="keyword">return</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">ostream_string</span><span class="special">(</span><span class="identifier">os</span><span class="special">,</span> <span class="identifier">str</span><span class="special">.</span><span class="identifier">data</span><span class="special">(),</span> <span class="identifier">str</span><span class="special">.</span><span class="identifier">size</span><span class="special">());</span>
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<span class="special">}</span>
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</pre>
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<p>
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</p>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
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<a name="ostream_string.reference"></a><a class="link" href="ostream_string.html#ostream_string.reference" title="Reference">Reference</a>
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</h2></div></div></div>
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<p>
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</p>
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<pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">boost</span> <span class="special">{</span>
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<span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span>
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<span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span>
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<span class="identifier">ostream_string</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">os</span><span class="special">,</span>
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<span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">data</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">size</span><span class="special">);</span>
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<span class="special">}</span> <span class="comment">/* boost */</span>
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</pre>
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<p>
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</p>
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<h4>
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<a name="ostream_string.reference.h0"></a>
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<span class="phrase"><a name="ostream_string.reference.free_functions"></a></span><a class="link" href="ostream_string.html#ostream_string.reference.free_functions">Free
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functions</a>
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</h4>
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<div class="variablelist">
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<p class="title"><b></b></p>
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<dl class="variablelist">
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<dt><span class="term"><code class="computeroutput"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">></span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">ostream_string</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span>
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<span class="identifier">os</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">data</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">size</span><span class="special">);</span></code></span></dt>
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<dd><div class="variablelist">
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<p class="title"><b></b></p>
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<dl class="variablelist">
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<dt><span class="term">Effects</span></dt>
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<dd><p>
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Behaves like a formatted inserter (as described in [ostream.formatted.reqmts])
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of <code class="computeroutput"><span class="identifier">os</span></code>. Creates
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a character sequence <code class="computeroutput"><span class="identifier">seq</span></code>
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of <code class="computeroutput"><span class="identifier">size</span></code> characters
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starting at <code class="computeroutput"><span class="identifier">data</span></code>,
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each widened using <code class="computeroutput"><span class="identifier">os</span><span class="special">.</span><span class="identifier">widen</span><span class="special">()</span></code> ([basic.ios.members]). Determines
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padding for <code class="computeroutput"><span class="identifier">seq</span></code>
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as described in [ostream.formatted.reqmts]. Inserts <code class="computeroutput"><span class="identifier">seq</span></code> into <code class="computeroutput"><span class="identifier">os</span></code>.
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Calls <code class="computeroutput"><span class="identifier">width</span><span class="special">(</span><span class="number">0</span><span class="special">)</span></code>.
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</p></dd>
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<dt><span class="term">Returns</span></dt>
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<dd><p>
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<code class="computeroutput"><span class="identifier">os</span></code>.
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</p></dd>
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</dl>
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</div></dd>
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</dl>
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</div>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
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<a name="ostream_string.history"></a><a class="link" href="ostream_string.html#ostream_string.history" title="History">History</a>
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</h2></div></div></div>
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<h4>
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<a name="ostream_string.history.h0"></a>
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<span class="phrase"><a name="ostream_string.history.boost_1_71"></a></span><a class="link" href="ostream_string.html#ostream_string.history.boost_1_71">boost
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1.71</a>
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</h4>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
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Glen Fernandes updated the implementation of the <code class="computeroutput"><span class="identifier">basic_string_ref</span></code>
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and <code class="computeroutput"><span class="identifier">basic_string_view</span></code> stream
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insertion operators to write directly to the <code class="computeroutput"><span class="identifier">basic_streambuf</span></code>
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and refactored that functionality into this common utility.
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</li></ul></div>
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</div>
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</div>
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="left"><p><small>Last revised: August 14, 2019 at 12:05:25 GMT</small></p></td>
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