forked from boostorg/fusion
Eric Niebler
b0a18ff5c1
https://svn.boost.org/svn/boost/trunk ........ r42194 | anthonyw | 2007-12-19 23:46:00 -0800 (Wed, 19 Dec 2007) | 1 line added missing parentheses ........ r42195 | anthonyw | 2007-12-20 00:37:02 -0800 (Thu, 20 Dec 2007) | 1 line added hardware_concurrency support for apple, freebsd and sun platforms ........ r42196 | niels_dekker | 2007-12-20 01:09:44 -0800 (Thu, 20 Dec 2007) | 1 line Removed "mark-expected-failures" from value_init_test, for both Borland and GCC, as value_init.hpp changeset [41942] provides a workaround for them. ........ r42202 | fmhess | 2007-12-20 06:39:53 -0800 (Thu, 20 Dec 2007) | 6 lines Made putting the name of a typedef inside a "classname" element successfully produce a link to the typedef's reference documentation, or to the typedef's synopsis if that is all it has. ........ r42217 | vladimir_prus | 2007-12-20 13:18:47 -0800 (Thu, 20 Dec 2007) | 1 line Explain a couple of gcc limitations with precompiled headers ........ r42220 | matias | 2007-12-20 13:56:39 -0800 (Thu, 20 Dec 2007) | 1 line add explicit std::string initialization ........ r42221 | matias | 2007-12-20 13:59:18 -0800 (Thu, 20 Dec 2007) | 1 line add license to each html page ........ r42222 | matias | 2007-12-20 14:15:11 -0800 (Thu, 20 Dec 2007) | 1 line Time out: test_bimap_property_map @ gcc-3.4.6_linux_x86_64 ........ r42223 | djowel | 2007-12-20 15:24:28 -0800 (Thu, 20 Dec 2007) | 1 line Removing fusion variant adapter ........ r42224 | djowel | 2007-12-20 15:28:26 -0800 (Thu, 20 Dec 2007) | 1 line Removing fusion variant adapter ........ r42227 | nmusatti | 2007-12-20 23:03:44 -0800 (Thu, 20 Dec 2007) | 1 line Increased the latest supported version to 5.9.3, corresponding to the December 2007 update. ........ r42228 | anthonyw | 2007-12-21 02:54:59 -0800 (Fri, 21 Dec 2007) | 1 line Updated thread ID test ........ r42229 | anthonyw | 2007-12-21 03:05:37 -0800 (Fri, 21 Dec 2007) | 1 line Markup hardware_concurrency failure as expected on tru64 platforms, as support is not implemented ........ r42234 | dgregor | 2007-12-21 13:18:17 -0800 (Fri, 21 Dec 2007) | 1 line Reduce header dependencies, from Shunsuke Sogame. Fixes #1535 ........ [SVN r42236]
210 lines
14 KiB
HTML
210 lines
14 KiB
HTML
<html>
|
||
<head>
|
||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||
<title>
|
||
invoke_function_object</title>
|
||
<link rel="stylesheet" href="../../../../../../../../doc/html/boostbook.css" type="text/css">
|
||
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
|
||
<link rel="start" href="../../../../index.html" title="Chapter 1. Fusion 2.0">
|
||
<link rel="up" href="../functions.html" title="Functions">
|
||
<link rel="prev" href="invoke_proc.html" title="
|
||
invoke_procedure">
|
||
<link rel="next" href="../metafunctions.html" title="Metafunctions">
|
||
</head>
|
||
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
|
||
<table cellpadding="2" width="100%"><tr>
|
||
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td>
|
||
<td align="center"><a href="../../../../../../../../index.htm">Home</a></td>
|
||
<td align="center"><a href="../../../../../../../libraries.htm">Libraries</a></td>
|
||
<td align="center"><a href="../../../../../../../../people/people.htm">People</a></td>
|
||
<td align="center"><a href="../../../../../../../../more/faq.htm">FAQ</a></td>
|
||
<td align="center"><a href="../../../../../../../../more/index.htm">More</a></td>
|
||
</tr></table>
|
||
<hr>
|
||
<div class="spirit-nav">
|
||
<a accesskey="p" href="invoke_proc.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||
</div>
|
||
<div class="section" lang="en">
|
||
<div class="titlepage"><div><div><h5 class="title">
|
||
<a name="fusion.functional.invocation.functions.invoke_fobj"></a><a href="invoke_fobj.html" title="
|
||
invoke_function_object">
|
||
invoke_function_object</a></h5></div></div></div>
|
||
<a name="fusion.functional.invocation.functions.invoke_fobj.description"></a><h6>
|
||
<a name="id659620"></a>
|
||
<a href="invoke_fobj.html#fusion.functional.invocation.functions.invoke_fobj.description">Description</a>
|
||
</h6>
|
||
<p>
|
||
Calls a <a href="../../concepts/poly.html" title=" Polymorphic Function
|
||
Object">Polymorphic Function
|
||
Object</a> with the arguments from a <a href="../../../sequence.html" title="Sequence">Sequence</a>.
|
||
</p>
|
||
<p>
|
||
The first template parameter can be specialized explicitly to avoid copying
|
||
and/or to control the const qualification of a function object.
|
||
</p>
|
||
<a name="fusion.functional.invocation.functions.invoke_fobj.synopsis"></a><h6>
|
||
<a name="id659675"></a>
|
||
<a href="invoke_fobj.html#fusion.functional.invocation.functions.invoke_fobj.synopsis">Synopsis</a>
|
||
</h6>
|
||
<pre class="programlisting">
|
||
<span class="keyword">template</span><span class="special"><</span>
|
||
<span class="keyword">typename</span> <span class="identifier">Function</span><span class="special">,</span>
|
||
<span class="keyword">class</span> <span class="identifier">Sequence</span>
|
||
<span class="special">></span>
|
||
<span class="keyword">typename</span> <a href="../metafunctions/invoke_fobj.html" title="
|
||
invoke_function_object"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">invoke_function_object</span></tt></a><span class="special"><</span><span class="identifier">Function</span><span class="special">,</span> <span class="identifier">Sequence</span><span class="special">>::</span><span class="identifier">type</span>
|
||
<span class="identifier">invoke_function_object</span><span class="special">(</span><span class="identifier">Function</span> <span class="identifier">f</span><span class="special">,</span> <span class="identifier">Sequence</span> <span class="special">&</span> <span class="identifier">s</span><span class="special">);</span>
|
||
|
||
<span class="keyword">template</span><span class="special"><</span>
|
||
<span class="keyword">typename</span> <span class="identifier">Function</span><span class="special">,</span>
|
||
<span class="keyword">class</span> <span class="identifier">Sequence</span>
|
||
<span class="special">></span>
|
||
<span class="keyword">typename</span> <a href="../metafunctions/invoke_fobj.html" title="
|
||
invoke_function_object"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">invoke_function_object</span></tt></a><span class="special"><</span><span class="identifier">Function</span><span class="special">,</span> <span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">>::</span><span class="identifier">type</span>
|
||
<span class="identifier">invoke_function_object</span><span class="special">(</span><span class="identifier">Function</span> <span class="identifier">f</span><span class="special">,</span> <span class="identifier">Sequence</span> <span class="keyword">const</span> <span class="special">&</span> <span class="identifier">s</span><span class="special">);</span>
|
||
</pre>
|
||
<a name="fusion.functional.invocation.functions.invoke_fobj.parameters"></a><h6>
|
||
<a name="id660056"></a>
|
||
<a href="invoke_fobj.html#fusion.functional.invocation.functions.invoke_fobj.parameters">Parameters</a>
|
||
</h6>
|
||
<div class="informaltable"><table class="table">
|
||
<colgroup>
|
||
<col>
|
||
<col>
|
||
<col>
|
||
</colgroup>
|
||
<thead><tr>
|
||
<th>
|
||
<p>
|
||
Parameter
|
||
</p>
|
||
</th>
|
||
<th>
|
||
<p>
|
||
Requirement
|
||
</p>
|
||
</th>
|
||
<th>
|
||
<p>
|
||
Description
|
||
</p>
|
||
</th>
|
||
</tr></thead>
|
||
<tbody>
|
||
<tr>
|
||
<td>
|
||
<p>
|
||
<tt class="computeroutput"><span class="identifier">f</span></tt>
|
||
</p>
|
||
</td>
|
||
<td>
|
||
<p>
|
||
Model of <a href="../../concepts/poly.html" title=" Polymorphic Function
|
||
Object">Polymorphic
|
||
Function Object</a>
|
||
</p>
|
||
</td>
|
||
<td>
|
||
<p>
|
||
The function object to call.
|
||
</p>
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td>
|
||
<p>
|
||
<tt class="computeroutput"><span class="identifier">s</span></tt>
|
||
</p>
|
||
</td>
|
||
<td>
|
||
<p>
|
||
Model of <a href="../../../sequence/concepts/forward_sequence.html" title="Forward
|
||
Sequence">Forward
|
||
Sequence</a>
|
||
</p>
|
||
</td>
|
||
<td>
|
||
<p>
|
||
The arguments.
|
||
</p>
|
||
</td>
|
||
</tr>
|
||
</tbody>
|
||
</table></div>
|
||
<a name="fusion.functional.invocation.functions.invoke_fobj.expression_semantics"></a><h6>
|
||
<a name="id660216"></a>
|
||
<a href="invoke_fobj.html#fusion.functional.invocation.functions.invoke_fobj.expression_semantics">Expression
|
||
Semantics</a>
|
||
</h6>
|
||
<pre class="programlisting">
|
||
<span class="identifier">invoke_function_object</span><span class="special">(</span><span class="identifier">f</span><span class="special">,</span><span class="identifier">s</span><span class="special">);</span>
|
||
</pre>
|
||
<p>
|
||
<span class="bold"><b>Return type</b></span>: Return type of <tt class="computeroutput"><span class="identifier">f</span></tt> when invoked with the elements in
|
||
<tt class="computeroutput"><span class="identifier">s</span></tt> as its arguments.
|
||
</p>
|
||
<p>
|
||
<span class="bold"><b>Semantics</b></span>: Invokes <tt class="computeroutput"><span class="identifier">f</span></tt>
|
||
with the elements in <tt class="computeroutput"><span class="identifier">s</span></tt>
|
||
as arguments and returns the result of the call expression.
|
||
</p>
|
||
<p>
|
||
/functional/invocation/invoke_function_object.hpp>
|
||
</p>
|
||
<a name="fusion.functional.invocation.functions.invoke_fobj.example"></a><h6>
|
||
<a name="id660359"></a>
|
||
<a href="invoke_fobj.html#fusion.functional.invocation.functions.invoke_fobj.example">Example</a>
|
||
</h6>
|
||
<pre class="programlisting">
|
||
<span class="keyword">struct</span> <span class="identifier">sub</span>
|
||
<span class="special">{</span>
|
||
<span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Sig</span><span class="special">></span>
|
||
<span class="keyword">struct</span> <span class="identifier">result</span><span class="special">;</span>
|
||
|
||
<span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">Self</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">T</span><span class="special">></span>
|
||
<span class="keyword">struct</span> <span class="identifier">result</span><span class="special"><</span> <span class="identifier">Self</span><span class="special">(</span><span class="identifier">T</span><span class="special">,</span><span class="identifier">T</span><span class="special">)</span> <span class="special">></span>
|
||
<span class="special">{</span> <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">remove_reference</span><span class="special"><</span><span class="identifier">T</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">type</span><span class="special">;</span> <span class="special">};</span>
|
||
|
||
<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="identifier">T</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">T</span> <span class="identifier">lhs</span><span class="special">,</span> <span class="identifier">T</span> <span class="identifier">rhs</span><span class="special">)</span> <span class="keyword">const</span>
|
||
<span class="special">{</span>
|
||
<span class="keyword">return</span> <span class="identifier">lhs</span> <span class="special">-</span> <span class="identifier">rhs</span><span class="special">;</span>
|
||
<span class="special">}</span>
|
||
<span class="special">};</span>
|
||
|
||
<span class="keyword">void</span> <span class="identifier">try_it</span><span class="special">()</span>
|
||
<span class="special">{</span>
|
||
<span class="identifier">sub</span> <span class="identifier">f</span><span class="special">;</span>
|
||
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">f</span><span class="special">(</span><span class="number">2</span><span class="special">,</span><span class="number">1</span><span class="special">)</span> <span class="special">==</span> <span class="identifier">invoke_function_object</span><span class="special">(</span><span class="identifier">f</span><span class="special">,</span><a href="../../../container/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">2</span><span class="special">,</span><span class="number">1</span><span class="special">)));</span>
|
||
<span class="special">}</span>
|
||
</pre>
|
||
<a name="fusion.functional.invocation.functions.invoke_fobj.see_also"></a><h6>
|
||
<a name="id660909"></a>
|
||
<a href="invoke_fobj.html#fusion.functional.invocation.functions.invoke_fobj.see_also">See
|
||
also</a>
|
||
</h6>
|
||
<div class="itemizedlist"><ul type="disc">
|
||
<li><a href="invoke.html" title="invoke"><tt class="computeroutput"><span class="identifier">invoke</span></tt></a></li>
|
||
<li><a href="invoke_proc.html" title="
|
||
invoke_procedure"><tt class="computeroutput"><span class="identifier">invoke_procedure</span></tt></a></li>
|
||
<li><a href="../metafunctions/invoke_fobj.html" title="
|
||
invoke_function_object"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">invoke_function_object</span></tt></a></li>
|
||
<li><a href="../../adapters/fused_function_object.html" title="fused_function_object"><tt class="computeroutput"><span class="identifier">fused_function_object</span></tt></a></li>
|
||
</ul></div>
|
||
</div>
|
||
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
|
||
<td align="left"></td>
|
||
<td align="right"><div class="copyright-footer">Copyright © 2001-2007 Joel de Guzman, Dan Marsden, Tobias
|
||
Schwinger<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></td>
|
||
</tr></table>
|
||
<hr>
|
||
<div class="spirit-nav">
|
||
<a accesskey="p" href="invoke_proc.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
|
||
</div>
|
||
</body>
|
||
</html>
|