execution__execute.html
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<div class="titlepage"><div><div><h3 class="title">
<a name="asio.reference.execution__execute"></a><a class="link" href="execution__execute.html" title="execution::execute">execution::execute</a>
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<p>
<a class="indexterm" name="asio.indexterm.execution__execute"></a>
A customisation point
that executes a function on an executor.
</p>
<pre class="programlisting">constexpr unspecified execute = unspecified;
</pre>
<p>
The name <code class="computeroutput">execution::execute</code> denotes a customisation point object.
</p>
<p>
For some subexpressions <code class="computeroutput">e</code> and <code class="computeroutput">f</code>, let <code class="computeroutput">E</code>
be a type such that <code class="computeroutput">decltype((e))</code> is <code class="computeroutput">E</code> and let
<code class="computeroutput">F</code> be a type such that <code class="computeroutput">decltype((f))</code> is <code class="computeroutput">F</code>.
The expression <code class="computeroutput">execution::execute(e, f)</code> is ill-formed if <code class="computeroutput">F</code>
does not model <code class="computeroutput">invocable</code>, or if <code class="computeroutput">E</code> does not model
either <code class="computeroutput">executor</code> or <code class="computeroutput">sender</code>. Otherwise, it is expression-equivalent
to:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<code class="computeroutput">e.execute(f)</code>, if that expression is valid. If the function
selected does not execute the function object <code class="computeroutput">f</code> on the executor
<code class="computeroutput">e</code>, the program is ill-formed with no diagnostic required.
</li>
<li class="listitem">
Otherwise, <code class="computeroutput">execute(e, f)</code>, if that expression is valid, with
overload resolution performed in a context that includes the declaration
<code class="computeroutput">void execute();</code> and that does not include a declaration
of <code class="computeroutput">execution::execute</code>. If the function selected by overload
resolution does not execute the function object <code class="computeroutput">f</code> on the
executor <code class="computeroutput">e</code>, the program is ill-formed with no diagnostic
required.
</li>
</ul></div>
<h5>
<a name="asio.reference.execution__execute.h0"></a>
<span><a name="asio.reference.execution__execute.requirements"></a></span><a class="link" href="execution__execute.html#asio.reference.execution__execute.requirements">Requirements</a>
</h5>
<p>
<span class="emphasis"><em>Header: </em></span><code class="literal">asio/execution/execute.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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