execution__schedule.html
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<div class="titlepage"><div><div><h3 class="title">
<a name="asio.reference.execution__schedule"></a><a class="link" href="execution__schedule.html" title="execution::schedule">execution::schedule</a>
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<p>
<a class="indexterm" name="asio.indexterm.execution__schedule"></a>
A customisation point
that is used to obtain a sender from a scheduler.
</p>
<pre class="programlisting">constexpr unspecified schedule = unspecified;
</pre>
<p>
The name <code class="computeroutput">execution::schedule</code> denotes a customisation point object.
For some subexpression <code class="computeroutput">s</code>, let <code class="computeroutput">S</code> be a type such
that <code class="computeroutput">decltype((s))</code> is <code class="computeroutput">S</code>. The expression <code class="computeroutput">execution::schedule(s)</code>
is expression-equivalent to:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<code class="computeroutput">s.schedule()</code>, if that expression is valid and its type models
<code class="computeroutput">sender</code>.
</li>
<li class="listitem">
Otherwise, <code class="computeroutput">schedule(s)</code>, if that expression is valid and
its type models <code class="computeroutput">sender</code> with overload resolution performed
in a context that includes the declaration <code class="computeroutput">void schedule();</code>
and that does not include a declaration of <code class="computeroutput">execution::schedule</code>.
</li>
<li class="listitem">
Otherwise, <code class="computeroutput">S</code> if <code class="computeroutput">S</code> satisfies <code class="computeroutput">executor</code>.
</li>
<li class="listitem">
Otherwise, <code class="computeroutput">execution::schedule(s)</code> is ill-formed.
</li>
</ul></div>
<h5>
<a name="asio.reference.execution__schedule.h0"></a>
<span><a name="asio.reference.execution__schedule.requirements"></a></span><a class="link" href="execution__schedule.html#asio.reference.execution__schedule.requirements">Requirements</a>
</h5>
<p>
<span class="emphasis"><em>Header: </em></span><code class="literal">asio/execution/schedule.hpp</code>
</p>
<p>
<span class="emphasis"><em>Convenience header: </em></span><code class="literal">asio/execution.hpp</code>
</p>
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<td align="right"><div class="copyright-footer">Copyright © 2003-2020 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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