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Eric Niebler b0a18ff5c1 Merged revisions 42180-42235 via svnmerge from 
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  r42194 | anthonyw | 2007-12-19 23:46:00 -0800 (Wed, 19 Dec 2007) | 1 line
  
  added missing parentheses
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  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
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  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.
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  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.
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  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
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  r42220 | matias | 2007-12-20 13:56:39 -0800 (Thu, 20 Dec 2007) | 1 line
  
  add explicit std::string initialization
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  r42221 | matias | 2007-12-20 13:59:18 -0800 (Thu, 20 Dec 2007) | 1 line
  
  add license to each html page
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  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
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  r42223 | djowel | 2007-12-20 15:24:28 -0800 (Thu, 20 Dec 2007) | 1 line
  
  Removing fusion variant adapter
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  r42224 | djowel | 2007-12-20 15:28:26 -0800 (Thu, 20 Dec 2007) | 1 line
  
  Removing fusion variant adapter
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  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.
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  r42228 | anthonyw | 2007-12-21 02:54:59 -0800 (Fri, 21 Dec 2007) | 1 line
  
  Updated thread ID test
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  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
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  r42234 | dgregor | 2007-12-21 13:18:17 -0800 (Fri, 21 Dec 2007) | 1 line
  
  Reduce header dependencies, from Shunsuke Sogame. Fixes #1535
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[SVN r42236]
2007-12-21 22:19:06 +00:00

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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title> Deferred
Callable Object</title>
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<link rel="start" href="../../../index.html" title="Chapter 1. Fusion 2.0">
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<div class="section" lang="en">
<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.functional.concepts.def_callable"></a><a href="def_callable.html" title=" Deferred
Callable Object"> Deferred
Callable Object</a></h4></div></div></div>
<a name="fusion.functional.concepts.def_callable.description"></a><h5>
<a name="id655582"></a>
<a href="def_callable.html#fusion.functional.concepts.def_callable.description">Description</a>
</h5>
<p>
<a href="callable.html" title=" Callable Object">Callable Object</a>
types that work with <a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top">Boost.ResultOf</a>
to determine the result of a call.
</p>
<a name="fusion.functional.concepts.def_callable.refinement_of"></a><h5>
<a name="id655629"></a>
<a href="def_callable.html#fusion.functional.concepts.def_callable.refinement_of">Refinement
of</a>
</h5>
<div class="itemizedlist"><ul type="disc"><li><a href="callable.html" title=" Callable Object">Callable Object</a></li></ul></div>
<div class="sidebar"><p>
note Once C++ supports the <tt class="literal">decltype</tt> keyword, all models
of <a href="callable.html" title=" Callable Object">Callable Object</a>
will also be models of <a href="def_callable.html" title=" Deferred
Callable Object">Deferred
Callable Object</a>, because function objects won't need client-side
support for <tt class="computeroutput"><span class="identifier">result_of</span></tt>.
</p></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">F</span></tt></span></dt>
<dd><p>
A possibly const qualified Deferred Callable Object type
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">A1</span>
<span class="special">...</span><span class="identifier">AN</span></tt></span></dt>
<dd><p>
Argument types
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">a1</span>
<span class="special">...</span><span class="identifier">aN</span></tt></span></dt>
<dd><p>
Objects or references to objects with types <tt class="computeroutput"><span class="identifier">A1</span>
<span class="special">...</span><span class="identifier">AN</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">T1</span>
<span class="special">...</span><span class="identifier">TN</span></tt></span></dt>
<dd><p>
<tt class="computeroutput"><span class="identifier">T</span></tt>i is <tt class="computeroutput"><span class="identifier">A</span></tt>i <tt class="computeroutput"><span class="special">&amp;</span></tt>
if <tt class="computeroutput"><span class="identifier">a</span></tt>i is an LValue,
same as <tt class="computeroutput"><span class="identifier">A</span></tt>i, otherwise
</p></dd>
</dl>
</div>
<a name="fusion.functional.concepts.def_callable.expression_requirements"></a><h5>
<a name="id655935"></a>
<a href="def_callable.html#fusion.functional.concepts.def_callable.expression_requirements">Expression
requirements</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Type
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></tt></a><tt class="computeroutput"><span class="special">&lt;</span> <span class="identifier">F</span><span class="special">(</span><span class="identifier">T1</span>
<span class="special">...</span><span class="identifier">TN</span><span class="special">)</span> <span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
<td>
<p>
Result of a call with <tt class="computeroutput"><span class="identifier">A1</span>
<span class="special">...</span><span class="identifier">AN</span></tt>-typed
arguments
</p>
</td>
</tr></tbody>
</table></div>
<a name="fusion.functional.concepts.def_callable.models"></a><h5>
<a name="id656119"></a>
<a href="def_callable.html#fusion.functional.concepts.def_callable.models">Models</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li>
<a href="poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a> types
</li>
<li>
member (function or data) pointer types
</li>
</ul></div>
<a name="fusion.functional.concepts.def_callable.examples"></a><h5>
<a name="id656165"></a>
<a href="def_callable.html#fusion.functional.concepts.def_callable.examples">Examples</a>
</h5>
<pre class="programlisting">
<span class="special">&amp;</span> <span class="identifier">a_free_function</span>
<span class="special">&amp;</span> <span class="identifier">a_class</span><span class="special">::</span><span class="identifier">a_static_member_function</span>
<span class="special">&amp;</span> <span class="identifier">a_class</span><span class="special">::</span><span class="identifier">a_nonstatic_data_member</span>
<span class="special">&amp;</span> <span class="identifier">a_class</span><span class="special">::</span><span class="identifier">a_nonstatic_member_function</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">less</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;()</span>
<span class="comment">// using namespace boost;
</span><span class="identifier">bind</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">less</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;(),</span> <span class="identifier">_1</span><span class="special">,</span> <span class="number">5</span><span class="special">)</span>
<span class="comment">// Note: Boost.Lambda expressions don't work with __boost_result_of__
</span><span class="identifier">fusion</span><span class="special">::</span><a href="../generation/functions/mk_fused_fobj.html" title="
make_fused_function_object"><tt class="computeroutput"><span class="identifier">make_fused_function_object</span></tt></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">less</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;())</span>
</pre>
</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>
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