96 lines
5.0 KiB
HTML
96 lines
5.0 KiB
HTML
|
<html>
|
||
|
|
<head>
|
||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||
|
|
<title>require_result</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="require_concept_result/type.html" title="require_concept_result::type">
|
||
|
|
<link rel="next" href="require_result/type.html" title="require_result::type">
|
||
|
|
<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="require_concept_result/type.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="require_result/type.html"><img src="../../next.png" alt="Next"></a>
|
||
|
|
</div>
|
||
|
|
<div class="section">
|
||
|
|
<div class="titlepage"><div><div><h3 class="title">
|
||
|
|
<a name="asio.reference.require_result"></a><a class="link" href="require_result.html" title="require_result">require_result</a>
|
||
|
|
</h3></div></div></div>
|
||
|
|
<p>
|
||
|
|
<a class="indexterm" name="asio.indexterm.require_result"></a>
|
||
|
|
</p>
|
||
|
|
<p>
|
||
|
|
A type trait that determines the result type of a <code class="computeroutput"><span class="identifier">require</span></code>
|
||
|
|
expression.
|
||
|
|
</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="special">...</span> <span class="identifier">Properties</span><span class="special">></span>
|
||
|
|
<span class="keyword">struct</span> <span class="identifier">require_result</span>
|
||
|
|
</pre>
|
||
|
|
<h5>
|
||
|
|
<a name="asio.reference.require_result.h0"></a>
|
||
|
|
<span><a name="asio.reference.require_result.types"></a></span><a class="link" href="require_result.html#asio.reference.require_result.types">Types</a>
|
||
|
|
</h5>
|
||
|
|
<div class="informaltable"><table class="table">
|
||
|
|
<colgroup>
|
||
|
|
<col>
|
||
|
|
<col>
|
||
|
|
</colgroup>
|
||
|
|
<thead><tr>
|
||
|
|
<th>
|
||
|
|
<p>
|
||
|
|
Name
|
||
|
|
</p>
|
||
|
|
</th>
|
||
|
|
<th>
|
||
|
|
<p>
|
||
|
|
Description
|
||
|
|
</p>
|
||
|
|
</th>
|
||
|
|
</tr></thead>
|
||
|
|
<tbody><tr>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
<a class="link" href="require_result/type.html" title="require_result::type"><span class="bold"><strong>type</strong></span></a>
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
<p>
|
||
|
|
The result of the require expression.
|
||
|
|
</p>
|
||
|
|
</td>
|
||
|
|
</tr></tbody>
|
||
|
|
</table></div>
|
||
|
|
<p>
|
||
|
|
Class template <code class="computeroutput"><span class="identifier">require_result</span></code>
|
||
|
|
is a trait that determines the result type of the expression <code class="computeroutput"><span class="identifier">asio</span><span class="special">::</span><span class="identifier">require</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">Properties</span><span class="special">>()...)</span></code>.
|
||
|
|
</p>
|
||
|
|
<h5>
|
||
|
|
<a name="asio.reference.require_result.h1"></a>
|
||
|
|
<span><a name="asio.reference.require_result.requirements"></a></span><a class="link" href="require_result.html#asio.reference.require_result.requirements">Requirements</a>
|
||
|
|
</h5>
|
||
|
|
<p>
|
||
|
|
<span class="emphasis"><em>Header: </em></span><code class="literal">asio/require.hpp</code>
|
||
|
|
</p>
|
||
|
|
<p>
|
||
|
|
<span class="emphasis"><em>Convenience header: </em></span><code class="literal">asio.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="require_concept_result/type.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="require_result/type.html"><img src="../../next.png" alt="Next"></a>
|
||
|
|
</div>
|
||
|
|
</body>
|
||
|
|
</html>
|