<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>execution::can_execute</title> <link rel="stylesheet" href="../../boostbook.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.75.2"> <link rel="home" href="../../index.html" title="Asio"> <link rel="up" href="../reference.html" title="Reference"> <link rel="prev" href="execution__can_connect.html" title="execution::can_connect"> <link rel="next" href="execution__can_schedule.html" title="execution::can_schedule"> <meta name="viewport" content="width=device-width, initial-scale=1"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table cellpadding="2" width="100%"><tr><td valign="top"><img alt="asio C++ library" width="250" height="60" src="../../asio.png"></td></tr></table> <hr> <div class="spirit-nav"> <a accesskey="p" href="execution__can_connect.html"><img src="../../prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../home.png" alt="Home"></a><a accesskey="n" href="execution__can_schedule.html"><img src="../../next.png" alt="Next"></a> </div> <div class="section"> <div class="titlepage"><div><div><h3 class="title"> <a name="asio.reference.execution__can_execute"></a><a class="link" href="execution__can_execute.html" title="execution::can_execute">execution::can_execute</a> </h3></div></div></div> <p> <a class="indexterm" name="asio.indexterm.execution__can_execute"></a> </p> <p> (Deprecated.) A type trait that determines whether an <code class="computeroutput"><span class="identifier">execute</span></code> expression is well-formed. </p> <pre class="programlisting"><span class="keyword">template</span><span class="special"><</span> <span class="keyword">typename</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">F</span><span class="special">></span> <span class="keyword">struct</span> <span class="identifier">can_execute</span> </pre> <p> Class template <code class="computeroutput"><span class="identifier">can_execute</span></code> is a trait that is derived from <code class="computeroutput"><span class="identifier">true_type</span></code> if the expression <code class="computeroutput"><span class="identifier">execution</span><span class="special">::</span><span class="identifier">execute</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span><span class="identifier">T</span><span class="special">>(),</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span><span class="identifier">F</span><span class="special">>())</span></code> is well formed; otherwise <code class="computeroutput"><span class="identifier">false_type</span></code>. </p> <h5> <a name="asio.reference.execution__can_execute.h0"></a> <span><a name="asio.reference.execution__can_execute.requirements"></a></span><a class="link" href="execution__can_execute.html#asio.reference.execution__can_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> </div> <div class="copyright-footer">Copyright © 2003-2023 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>) </p> </div> <hr> <div class="spirit-nav"> <a accesskey="p" href="execution__can_connect.html"><img src="../../prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../home.png" alt="Home"></a><a accesskey="n" href="execution__can_schedule.html"><img src="../../next.png" alt="Next"></a> </div> </body> </html>