boost_fusion/doc/html/fusion/functional/concepts/def_callable.html

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title> Deferred
        Callable Object</title>
<link rel="stylesheet" href="../../../../../../../doc/html/boostbook.css" type="text/css">
<<<<<<< .working
<meta name="generator" content="DocBook XSL Stylesheets V1.65.1">
=======
<meta name="generator" content="DocBook XSL Stylesheets V1.75.1">
>>>>>>> .merge-right.r57125
<link rel="home" href="../../../index.html" title="Chapter 1. Fusion 2.0">
<link rel="up" href="../concepts.html" title="Concepts">
<link rel="previous" href="reg_callable.html" title=" Regular Callable
        Object">
<link rel="next" href="poly.html" title=" Polymorphic Function
        Object">
</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.html">Home</a></td>
<td align="center"><a href="../../../../../../libraries.htm">Libraries</a></td>
<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
<td align="center"><a href="http://www.boost.org/users/faq.html">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="reg_callable.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../concepts.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="poly.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
</div>
<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>
<<<<<<< .working
</h4></div></div>
<div></div>
</div>
<a name="fusion.functional.concepts.def_callable.description"></a><h5>
<a name="id610834"></a>
          <a href="def_callable.html#fusion.functional.concepts.def_callable.description">Description</a>
        </h5>
=======
</h4></div></div></div>
<a name="fusion.functional.concepts.def_callable.description"></a><h6>
<a name="id817426"></a>
          <a class="link" href="def_callable.html#fusion.functional.concepts.def_callable.description">Description</a>
        </h6>
>>>>>>> .merge-right.r57125
<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>
<<<<<<< .working
<a name="fusion.functional.concepts.def_callable.refinement_of"></a><h5>
<a name="id610880"></a>
          <a href="def_callable.html#fusion.functional.concepts.def_callable.refinement_of">Refinement
=======
<a name="fusion.functional.concepts.def_callable.refinement_of"></a><h6>
<a name="id817452"></a>
          <a class="link" href="def_callable.html#fusion.functional.concepts.def_callable.refinement_of">Refinement
>>>>>>> .merge-right.r57125
          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>
<<<<<<< .working
<a name="fusion.functional.concepts.def_callable.expression_requirements"></a><h5>
<a name="id611182"></a>
          <a href="def_callable.html#fusion.functional.concepts.def_callable.expression_requirements">Expression
=======
<a name="fusion.functional.concepts.def_callable.expression_requirements"></a><h6>
<a name="id817667"></a>
          <a class="link" href="def_callable.html#fusion.functional.concepts.def_callable.expression_requirements">Expression
>>>>>>> .merge-right.r57125
          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>
<<<<<<< .working
<a name="fusion.functional.concepts.def_callable.models"></a><h5>
<a name="id611364"></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
=======
<a name="fusion.functional.concepts.def_callable.models"></a><h6>
<a name="id820004"></a>
          <a class="link" href="def_callable.html#fusion.functional.concepts.def_callable.models">Models</a>
        </h6>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<a class="link" href="poly.html" title="Polymorphic Function Object">Polymorphic Function
>>>>>>> .merge-right.r57125
            Object</a> types
          </li>
<li>
            member (function or data) pointer types
          </li>
</ul></div>
<<<<<<< .working
<a name="fusion.functional.concepts.def_callable.examples"></a><h5>
<a name="id611409"></a>
          <a href="def_callable.html#fusion.functional.concepts.def_callable.examples">Examples</a>
        </h5>
=======
<a name="fusion.functional.concepts.def_callable.examples"></a><h6>
<a name="id820034"></a>
          <a class="link" href="def_callable.html#fusion.functional.concepts.def_callable.examples">Examples</a>
        </h6>
>>>>>>> .merge-right.r57125
<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>
</div></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="reg_callable.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../concepts.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="poly.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
</div>
</body>
</html>