123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152 |
- <html>
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
- <title>ostream_string</title>
- <link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css">
- <meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
- <link rel="home" href="ostream_string.html" title="ostream_string">
- </head>
- <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
- <table cellpadding="2" width="100%"><tr>
- <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../boost.png"></td>
- <td align="center"><a href="../../../../index.html">Home</a></td>
- <td align="center"><a href="../../../../libs/libraries.htm">Libraries</a></td>
- <td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
- <td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
- <td align="center"><a href="../../../../more/index.htm">More</a></td>
- </tr></table>
- <hr>
- <div class="spirit-nav"></div>
- <div class="article">
- <div class="titlepage">
- <div>
- <div><h2 class="title">
- <a name="ostream_string"></a>ostream_string</h2></div>
- <div><div class="authorgroup"><div class="author"><h3 class="author">
- <span class="firstname">Glen</span> <span class="surname">Fernandes</span>
- </h3></div></div></div>
- <div><p class="copyright">Copyright © 2019 Glen Joseph Fernandes</p></div>
- <div><div class="legalnotice">
- <a name="ostream_string.legal"></a><p>
- Distributed under the Boost Software License, Version 1.0.
- </p>
- </div></div>
- </div>
- <hr>
- </div>
- <div class="toc">
- <p><b>Table of Contents</b></p>
- <dl class="toc">
- <dt><span class="section"><a href="ostream_string.html#ostream_string.overview">Overview</a></span></dt>
- <dt><span class="section"><a href="ostream_string.html#ostream_string.examples">Examples</a></span></dt>
- <dt><span class="section"><a href="ostream_string.html#ostream_string.reference">Reference</a></span></dt>
- <dt><span class="section"><a href="ostream_string.html#ostream_string.history">History</a></span></dt>
- </dl>
- </div>
- <div class="section">
- <div class="titlepage"><div><div><h2 class="title" style="clear: both">
- <a name="ostream_string.overview"></a><a class="link" href="ostream_string.html#ostream_string.overview" title="Overview">Overview</a>
- </h2></div></div></div>
- <p>
- The header <boost/utility/ostream_string.hpp> provides the function template
- <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">ostream_string</span></code> for formatted output that
- satisfies the requirements of [ostream.formatted.reqmts].
- </p>
- </div>
- <div class="section">
- <div class="titlepage"><div><div><h2 class="title" style="clear: both">
- <a name="ostream_string.examples"></a><a class="link" href="ostream_string.html#ostream_string.examples" title="Examples">Examples</a>
- </h2></div></div></div>
- <p>
- The inserter for class template <code class="computeroutput"><span class="identifier">basic_string_view</span></code>
- could be implemented as follows:
- </p>
- <p>
- </p>
- <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>
- <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="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>
- <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>
- <span class="special">{</span>
- <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>
- <span class="special">}</span>
- </pre>
- <p>
- </p>
- </div>
- <div class="section">
- <div class="titlepage"><div><div><h2 class="title" style="clear: both">
- <a name="ostream_string.reference"></a><a class="link" href="ostream_string.html#ostream_string.reference" title="Reference">Reference</a>
- </h2></div></div></div>
- <p>
- </p>
- <pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">boost</span> <span class="special">{</span>
- <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> <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>
- <span class="special">}</span> <span class="comment">/* boost */</span>
- </pre>
- <p>
- </p>
- <h4>
- <a name="ostream_string.reference.h0"></a>
- <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
- functions</a>
- </h4>
- <div class="variablelist">
- <p class="title"><b></b></p>
- <dl class="variablelist">
- <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>
- <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>
- <dd><div class="variablelist">
- <p class="title"><b></b></p>
- <dl class="variablelist">
- <dt><span class="term">Effects</span></dt>
- <dd><p>
- Behaves like a formatted inserter (as described in [ostream.formatted.reqmts])
- of <code class="computeroutput"><span class="identifier">os</span></code>. Creates
- a character sequence <code class="computeroutput"><span class="identifier">seq</span></code>
- of <code class="computeroutput"><span class="identifier">size</span></code> characters
- starting at <code class="computeroutput"><span class="identifier">data</span></code>,
- 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
- padding for <code class="computeroutput"><span class="identifier">seq</span></code>
- 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>.
- Calls <code class="computeroutput"><span class="identifier">width</span><span class="special">(</span><span class="number">0</span><span class="special">)</span></code>.
- </p></dd>
- <dt><span class="term">Returns</span></dt>
- <dd><p>
- <code class="computeroutput"><span class="identifier">os</span></code>.
- </p></dd>
- </dl>
- </div></dd>
- </dl>
- </div>
- </div>
- <div class="section">
- <div class="titlepage"><div><div><h2 class="title" style="clear: both">
- <a name="ostream_string.history"></a><a class="link" href="ostream_string.html#ostream_string.history" title="History">History</a>
- </h2></div></div></div>
- <h4>
- <a name="ostream_string.history.h0"></a>
- <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
- 1.71</a>
- </h4>
- <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
- Glen Fernandes updated the implementation of the <code class="computeroutput"><span class="identifier">basic_string_ref</span></code>
- and <code class="computeroutput"><span class="identifier">basic_string_view</span></code> stream
- insertion operators to write directly to the <code class="computeroutput"><span class="identifier">basic_streambuf</span></code>
- and refactored that functionality into this common utility.
- </li></ul></div>
- </div>
- </div>
- <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
- <td align="left"><p><small>Last revised: December 10, 2019 at 00:21:48 GMT</small></p></td>
- <td align="right"><div class="copyright-footer"></div></td>
- </tr></table>
- <hr>
- <div class="spirit-nav"></div>
- </body>
- </html>
|