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138 lines
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<div class="titlepage"><div><div><h3 class="title">
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<a name="boost_asio.reference.MutableBufferSequence"></a><a class="link" href="MutableBufferSequence.html" title="Mutable buffer sequence requirements">Mutable buffer
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sequence requirements</a>
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</h3></div></div></div>
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<p>
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A <span class="emphasis"><em>mutable buffer sequence</em></span> represents a set of memory
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regions that may be used to receive the output of an operation, such as the
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<code class="computeroutput">receive</code> operation of a socket.
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</p>
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<p>
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A type <code class="computeroutput">X</code> meets the <code class="computeroutput">MutableBufferSequence</code> requirements
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if it satisfies the requirements of <code class="computeroutput">Destructible</code> (C++Std [destructible])
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and <code class="computeroutput">CopyConstructible</code> (C++Std [copyconstructible]), as well
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as the additional requirements listed below.
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</p>
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<p>
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In the table below, <code class="computeroutput">x</code> denotes a (possibly const) value of type
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<code class="computeroutput">X</code>, and <code class="computeroutput">u</code> denotes an identifier.
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</p>
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<div class="table">
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<a name="boost_asio.reference.MutableBufferSequence.t0"></a><p class="title"><b>Table 22. MutableBufferSequence requirements</b></p>
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<div class="table-contents"><table class="table" summary="MutableBufferSequence requirements">
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<colgroup>
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<col>
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<col>
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<col>
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</colgroup>
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<thead><tr>
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<th>
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<p>
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expression
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</p>
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</th>
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<th>
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<p>
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return type
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</p>
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</th>
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<th>
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<p>
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assertion/note<br> pre/post-condition
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</p>
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</th>
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</tr></thead>
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<tbody>
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<tr>
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<td>
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<p>
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<code class="computeroutput">boost::asio::buffer_sequence_begin(x)</code><br> <code class="computeroutput">boost::asio::buffer_sequence_end(x)</code>
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</p>
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</td>
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<td>
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<p>
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An iterator type meeting the requirements for bidirectional iterators
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(C++Std [bidirectional.iterators]) whose value type is convertible
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to <code class="computeroutput">mutable_buffer</code>.
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</p>
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</td>
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<td>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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</p>
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<pre class="programlisting">X u(x);
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</pre>
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<p>
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</p>
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</td>
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<td>
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</td>
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<td>
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<p>
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post:<br>
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</p>
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<pre class="programlisting">equal(
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boost::asio::buffer_sequence_begin(x),
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boost::asio::buffer_sequence_end(x),
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boost::asio::buffer_sequence_begin(u),
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boost::asio::buffer_sequence_end(u),
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[](const mutable_buffer& b1,
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const mutable_buffer& b2)
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{
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return b1.data() == b2.data()
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&& b1.size() == b2.size();
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})
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</pre>
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<p>
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</p>
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</td>
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</tr>
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</tbody>
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</table></div>
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</div>
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<br class="table-break">
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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"></td>
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<td align="right"><div class="copyright-footer">Copyright © 2003-2021 Christopher
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M. Kohlhoff<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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