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<div class="titlepage"><div><div><h3 class="title">
<a name="boost_asio.reference.experimental__as_single_t"></a><a class="link" href="experimental__as_single_t.html" title="experimental::as_single_t">experimental::as_single_t</a>
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<p>
<a class="indexterm" name="boost_asio.indexterm.experimental__as_single_t"></a>
</p>
<p>
Completion token type used to specify that the completion handler arguments
should be combined into a single argument.
</p>
<pre class="programlisting">template&lt;
typename CompletionToken&gt;
class as_single_t
</pre>
<h5>
<a name="boost_asio.reference.experimental__as_single_t.h0"></a>
<span class="phrase"><a name="boost_asio.reference.experimental__as_single_t.types"></a></span><a class="link" href="experimental__as_single_t.html#boost_asio.reference.experimental__as_single_t.types">Types</a>
</h5>
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Name
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Description
</p>
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<td>
<p>
<a class="link" href="experimental__as_single_t__default_constructor_tag.html" title="experimental::as_single_t::default_constructor_tag"><span class="bold"><strong>default_constructor_tag</strong></span></a>
</p>
</td>
<td>
<p>
Tag type used to prevent the "default" constructor from
being used for conversions.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="experimental__as_single_t__executor_with_default.html" title="experimental::as_single_t::executor_with_default"><span class="bold"><strong>executor_with_default</strong></span></a>
</p>
</td>
<td>
<p>
Adapts an executor to add the as_single_t completion token as the
default.
</p>
</td>
</tr>
</tbody>
</table></div>
<h5>
<a name="boost_asio.reference.experimental__as_single_t.h1"></a>
<span class="phrase"><a name="boost_asio.reference.experimental__as_single_t.member_functions"></a></span><a class="link" href="experimental__as_single_t.html#boost_asio.reference.experimental__as_single_t.member_functions">Member
Functions</a>
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<p>
<a class="link" href="experimental__as_single_t/as_default_on.html" title="experimental::as_single_t::as_default_on"><span class="bold"><strong>as_default_on</strong></span></a> <span class="silver">[static]</span>
</p>
</td>
<td>
<p>
Function helper to adapt an I/O object to use as_single_t as its
default completion token type.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="experimental__as_single_t/as_single_t.html" title="experimental::as_single_t::as_single_t"><span class="bold"><strong>as_single_t</strong></span></a> <span class="silver">[constructor]</span>
</p>
</td>
<td>
<p>
Default constructor. <br> <span class="silver"> —</span><br> Constructor.
</p>
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<h5>
<a name="boost_asio.reference.experimental__as_single_t.h2"></a>
<span class="phrase"><a name="boost_asio.reference.experimental__as_single_t.data_members"></a></span><a class="link" href="experimental__as_single_t.html#boost_asio.reference.experimental__as_single_t.data_members">Data
Members</a>
</h5>
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<tbody><tr>
<td>
<p>
<a class="link" href="experimental__as_single_t/token_.html" title="experimental::as_single_t::token_"><span class="bold"><strong>token_</strong></span></a>
</p>
</td>
<td>
</td>
</tr></tbody>
</table></div>
<p>
The <a class="link" href="experimental__as_single_t.html" title="experimental::as_single_t"><code class="computeroutput">experimental::as_single_t</code></a>
class is used to indicate that any arguments to the completion handler should
be combined and passed as a single argument. If there is already one argument,
that argument is passed as-is. If there is more than argument, the arguments
are first moved into a <code class="computeroutput">std::tuple</code> and that tuple is then passed
to the completion handler.
</p>
<h5>
<a name="boost_asio.reference.experimental__as_single_t.h3"></a>
<span class="phrase"><a name="boost_asio.reference.experimental__as_single_t.requirements"></a></span><a class="link" href="experimental__as_single_t.html#boost_asio.reference.experimental__as_single_t.requirements">Requirements</a>
</h5>
<p>
<span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/experimental/as_single.hpp</code>
</p>
<p>
<span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio.hpp</code>
</p>
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<td align="right"><div class="copyright-footer">Copyright © 2003-2021 Christopher
M. Kohlhoff<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
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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