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+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<title>Chapter 1. Boost.Member Function</title>
+<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css">
+<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
+<link rel="home" href="mem_fn.html" title="Chapter 1. Boost.Member Function">
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+<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>
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+<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
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+<hr>
+<div class="spirit-nav"></div>
+<div class="chapter">
+<div class="titlepage"><div>
+<div><h2 class="title">
+<a name="mem_fn"></a>Chapter 1. Boost.Member Function</h2></div>
+<div><p class="copyright">Copyright © 2001, 2002 Peter Dimov and Multi Media Ltd.</p></div>
+<div><p class="copyright">Copyright © 2003-2005 Peter Dimov</p></div>
+<div><div class="legalnotice">
+<a name="mem_fn.legal"></a><p>
+ Distributed under the <a href="http://boost.org/LICENSE_1_0.txt" target="_top">Boost
+ Software License, Version 1.0</a>.
+ </p>
+</div></div>
+</div></div>
+<div class="toc">
+<p><b>Table of Contents</b></p>
+<dl class="toc">
+<dt><span class="section"><a href="mem_fn.html#mem_fn.purpose">Purpose</a></span></dt>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.faq">Frequently Asked Questions</a></span></dt>
+<dd><dl>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.faq.can_mem_fn_be_used_instead_of_th">Can <code class="computeroutput"><span class="identifier">mem_fn</span></code> be used instead of the standard <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">mem_fun</span><span class="special">[</span><span class="identifier">_ref</span><span class="special">]</span></code>
+ adaptors?</a></span></dt>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.faq.should_i_replace_every_occurence">Should I
+ replace every occurence of <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">mem_fun</span><span class="special">[</span><span class="identifier">_ref</span><span class="special">]</span></code>
+ with <code class="computeroutput"><span class="identifier">mem_fn</span></code> in my existing
+ code?</a></span></dt>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.faq.does_mem_fn_work_with_com_method">Does <code class="computeroutput"><span class="identifier">mem_fn</span></code> work with COM methods?</a></span></dt>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.faq.why_isn_t_boost_mem_fn_enable_st">Why isn't
+ <code class="computeroutput"><span class="identifier">BOOST_MEM_FN_ENABLE_STDCALL</span></code>
+ defined automatically?</a></span></dt>
+</dl></dd>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.interface">Interface</a></span></dt>
+<dd><dl>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.interface.synopsys">Synopsis</a></span></dt>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.interface.common_requirements">Common requirements</a></span></dt>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.interface.get_pointer"><code class="computeroutput"><span class="identifier">get_pointer</span></code></a></span></dt>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.interface.mem_fn"><code class="computeroutput"><span class="identifier">mem_fn</span></code></a></span></dt>
+</dl></dd>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.implementation">Implementation</a></span></dt>
+<dd><dl>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.implementation.files">Files</a></span></dt>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.implementation.dependencies">Dependencies</a></span></dt>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.implementation.number_of_arguments">Number of
+ Arguments</a></span></dt>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.implementation.stdcall"><code class="computeroutput"><span class="identifier">__stdcall</span></code>,
+ <code class="computeroutput"><span class="identifier">__cdecl</span></code>, and <code class="computeroutput"><span class="identifier">__fastcall</span></code> Support</a></span></dt>
+</dl></dd>
+<dt><span class="section"><a href="mem_fn.html#mem_fn.acknowledgements">Acknowledgements</a></span></dt>
+</dl>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h2 class="title" style="clear: both">
+<a name="mem_fn.purpose"></a><a class="link" href="mem_fn.html#mem_fn.purpose" title="Purpose">Purpose</a>
+</h2></div></div></div>
+<p>
+ <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">mem_fn</span></code> is a generalization of the standard
+ functions <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">mem_fun</span></code> and <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">mem_fun_ref</span></code>.
+ It supports member function pointers with more than one argument, and the returned
+ function object can take a pointer, a reference, or a smart pointer to an object
+ instance as its first argument. <code class="computeroutput"><span class="identifier">mem_fn</span></code>
+ also supports pointers to data members by treating them as functions taking
+ no arguments and returning a (const) reference to the member.
+ </p>
+<p>
+ The purpose of <code class="computeroutput"><span class="identifier">mem_fn</span></code> is twofold.
+ First, it allows users to invoke a member function on a container with the
+ familiar
+ </p>
+<pre class="programlisting"><span class="identifier">std</span><span class="special">::</span><span class="identifier">for_each</span><span class="special">(</span><span class="identifier">v</span><span class="special">.</span><span class="identifier">begin</span><span class="special">(),</span> <span class="identifier">v</span><span class="special">.</span><span class="identifier">end</span><span class="special">(),</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">mem_fn</span><span class="special">(&</span><span class="identifier">Shape</span><span class="special">::</span><span class="identifier">draw</span><span class="special">));</span>
+</pre>
+<p>
+ syntax, even when the container stores smart pointers.
+ </p>
+<p>
+ Second, it can be used as a building block by library developers that want
+ to treat a pointer to member function as a function object. A library might
+ define an enhanced <code class="computeroutput"><span class="identifier">for_each</span></code>
+ algorithm with an overload of the form:
+ </p>
+<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">It</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> <span class="keyword">void</span> <span class="identifier">for_each</span><span class="special">(</span><span class="identifier">It</span> <span class="identifier">first</span><span class="special">,</span> <span class="identifier">It</span> <span class="identifier">last</span><span class="special">,</span> <span class="identifier">R</span> <span class="special">(</span><span class="identifier">T</span><span class="special">::*</span><span class="identifier">pmf</span><span class="special">)</span> <span class="special">())</span>
+<span class="special">{</span>
+ <span class="identifier">std</span><span class="special">::</span><span class="identifier">for_each</span><span class="special">(</span><span class="identifier">first</span><span class="special">,</span> <span class="identifier">last</span><span class="special">,</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">mem_fn</span><span class="special">(</span><span class="identifier">pmf</span><span class="special">));</span>
+<span class="special">}</span>
+</pre>
+<p>
+ that will allow the convenient syntax:
+ </p>
+<pre class="programlisting"><span class="identifier">for_each</span><span class="special">(</span><span class="identifier">v</span><span class="special">.</span><span class="identifier">begin</span><span class="special">(),</span> <span class="identifier">v</span><span class="special">.</span><span class="identifier">end</span><span class="special">(),</span> <span class="special">&</span><span class="identifier">Shape</span><span class="special">::</span><span class="identifier">draw</span><span class="special">);</span>
+</pre>
+<p>
+ When documenting the feature, the library author will simply state:
+ </p>
+<pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">It</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> <span class="keyword">void</span> <span class="identifier">for_each</span><span class="special">(</span><span class="identifier">It</span> <span class="identifier">first</span><span class="special">,</span> <span class="identifier">It</span> <span class="identifier">last</span><span class="special">,</span> <span class="identifier">R</span> <span class="special">(</span><span class="identifier">T</span><span class="special">::*</span><span class="identifier">pmf</span><span class="special">)</span> <span class="special">());</span>
+</pre>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
+ <span class="emphasis"><em>Effects:</em></span> Equivalent to <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">for_each</span><span class="special">(</span><span class="identifier">first</span><span class="special">,</span> <span class="identifier">last</span><span class="special">,</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">mem_fn</span><span class="special">(</span><span class="identifier">pmf</span><span class="special">))</span></code>.
+ </li></ul></div>
+<p>
+ where <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">mem_fn</span></code> can be a link to this page. See the
+ <a href="../../../../libs/bind/bind.html" target="_top">documentation of <code class="computeroutput"><span class="identifier">bind</span></code></a>
+ for an example.
+ </p>
+<p>
+ <code class="computeroutput"><span class="identifier">mem_fn</span></code> takes one argument,
+ a pointer to a member, and returns a function object suitable for use with
+ standard or user-defined algorithms:
+ </p>
+<pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">X</span>
+<span class="special">{</span>
+ <span class="keyword">void</span> <span class="identifier">f</span><span class="special">();</span>
+<span class="special">};</span>
+
+<span class="keyword">void</span> <span class="identifier">g</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">X</span><span class="special">></span> <span class="special">&</span> <span class="identifier">v</span><span class="special">)</span>
+<span class="special">{</span>
+ <span class="identifier">std</span><span class="special">::</span><span class="identifier">for_each</span><span class="special">(</span><span class="identifier">v</span><span class="special">.</span><span class="identifier">begin</span><span class="special">(),</span> <span class="identifier">v</span><span class="special">.</span><span class="identifier">end</span><span class="special">(),</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">mem_fn</span><span class="special">(&</span><span class="identifier">X</span><span class="special">::</span><span class="identifier">f</span><span class="special">));</span>
+<span class="special">};</span>
+
+<span class="keyword">void</span> <span class="identifier">h</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">X</span> <span class="special">*></span> <span class="keyword">const</span> <span class="special">&</span> <span class="identifier">v</span><span class="special">)</span>
+<span class="special">{</span>
+ <span class="identifier">std</span><span class="special">::</span><span class="identifier">for_each</span><span class="special">(</span><span class="identifier">v</span><span class="special">.</span><span class="identifier">begin</span><span class="special">(),</span> <span class="identifier">v</span><span class="special">.</span><span class="identifier">end</span><span class="special">(),</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">mem_fn</span><span class="special">(&</span><span class="identifier">X</span><span class="special">::</span><span class="identifier">f</span><span class="special">));</span>
+<span class="special">};</span>
+
+<span class="keyword">void</span> <span class="identifier">k</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">shared_ptr</span><span class="special"><</span><span class="identifier">X</span><span class="special">></span> <span class="special">></span> <span class="keyword">const</span> <span class="special">&</span> <span class="identifier">v</span><span class="special">)</span>
+<span class="special">{</span>
+ <span class="identifier">std</span><span class="special">::</span><span class="identifier">for_each</span><span class="special">(</span><span class="identifier">v</span><span class="special">.</span><span class="identifier">begin</span><span class="special">(),</span> <span class="identifier">v</span><span class="special">.</span><span class="identifier">end</span><span class="special">(),</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">mem_fn</span><span class="special">(&</span><span class="identifier">X</span><span class="special">::</span><span class="identifier">f</span><span class="special">));</span>
+<span class="special">};</span>
+</pre>
+<p>
+ The returned function object takes the same arguments as the input member function
+ plus a "flexible" first argument that represents the object instance.
+ </p>
+<p>
+ When the function object is invoked with a first argument <code class="computeroutput"><span class="identifier">x</span></code>
+ that is neither a pointer nor a reference to the appropriate class (<code class="computeroutput"><span class="identifier">X</span></code> in the example above), it uses <code class="computeroutput"><span class="identifier">get_pointer</span><span class="special">(</span><span class="identifier">x</span><span class="special">)</span></code> to obtain
+ a pointer from <code class="computeroutput"><span class="identifier">x</span></code>. Library authors
+ can "register" their smart pointer classes by supplying an appropriate
+ <code class="computeroutput"><span class="identifier">get_pointer</span></code> overload, allowing
+ <code class="computeroutput"><span class="identifier">mem_fn</span></code> to recognize and support
+ them.
+ </p>
+<p>
+ <span class="emphasis"><em>[Note:</em></span> <code class="computeroutput"><span class="identifier">get_pointer</span></code>
+ is not restricted to return a pointer. Any object that can be used in a member
+ function call expression <code class="computeroutput"><span class="special">(</span><span class="identifier">x</span><span class="special">->*</span><span class="identifier">pmf</span><span class="special">)(...)</span></code> will work.<span class="emphasis"><em>]</em></span>
+ </p>
+<p>
+ <span class="emphasis"><em>[Note:</em></span> the library uses an unqualified call to <code class="computeroutput"><span class="identifier">get_pointer</span></code>. Therefore, it will find, through
+ argument-dependent lookup, <code class="computeroutput"><span class="identifier">get_pointer</span></code>
+ overloads that are defined in the same namespace as the corresponding smart
+ pointer class, in addition to any <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">get_pointer</span></code>
+ overloads.<span class="emphasis"><em>]</em></span>
+ </p>
+<p>
+ All function objects returned by <code class="computeroutput"><span class="identifier">mem_fn</span></code>
+ expose a <code class="computeroutput"><span class="identifier">result_type</span></code> typedef
+ that represents the return type of the member function. For data members,
+ <code class="computeroutput"><span class="identifier">result_type</span></code> is defined as the
+ type of the member.
+ </p>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h2 class="title" style="clear: both">
+<a name="mem_fn.faq"></a><a class="link" href="mem_fn.html#mem_fn.faq" title="Frequently Asked Questions">Frequently Asked Questions</a>
+</h2></div></div></div>
+<div class="section">
+<div class="titlepage"><div><div><h3 class="title">
+<a name="mem_fn.faq.can_mem_fn_be_used_instead_of_th"></a><a class="link" href="mem_fn.html#mem_fn.faq.can_mem_fn_be_used_instead_of_th" title="Can mem_fn be used instead of the standard std::mem_fun[_ref] adaptors?">Can <code class="computeroutput"><span class="identifier">mem_fn</span></code> be used instead of the standard <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">mem_fun</span><span class="special">[</span><span class="identifier">_ref</span><span class="special">]</span></code>
+ adaptors?</a>
+</h3></div></div></div>
+<p>
+ Yes. For simple uses, <code class="computeroutput"><span class="identifier">mem_fn</span></code>
+ provides additional functionality that the standard adaptors do not. Complicated
+ expressions that use <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">bind1st</span></code>,
+ <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">bind2nd</span></code> or <a href="http://www.boost.org/doc/libs/1_31_0/libs/compose/index.htm" target="_top">Boost.Compose</a>
+ along with the standard adaptors can be rewritten using <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">bind</span></code>
+ that automatically takes advantage of <code class="computeroutput"><span class="identifier">mem_fn</span></code>.
+ </p>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h3 class="title">
+<a name="mem_fn.faq.should_i_replace_every_occurence"></a><a class="link" href="mem_fn.html#mem_fn.faq.should_i_replace_every_occurence" title="Should I replace every occurence of std::mem_fun[_ref] with mem_fn in my existing code?">Should I
+ replace every occurence of <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">mem_fun</span><span class="special">[</span><span class="identifier">_ref</span><span class="special">]</span></code>
+ with <code class="computeroutput"><span class="identifier">mem_fn</span></code> in my existing
+ code?</a>
+</h3></div></div></div>
+<p>
+ No, unless you have good reasons to do so. <code class="computeroutput"><span class="identifier">mem_fn</span></code>
+ is not 100% compatible with the standard adaptors, although it comes pretty
+ close. In particular, <code class="computeroutput"><span class="identifier">mem_fn</span></code>
+ does not return objects of type <code class="computeroutput"><span class="identifier">std</span><span class="special">::[</span><span class="identifier">const_</span><span class="special">]</span><span class="identifier">mem_fun</span><span class="special">[</span><span class="number">1</span><span class="special">][</span><span class="identifier">_ref</span><span class="special">]</span><span class="identifier">_t</span></code>,
+ as the standard adaptors do, and it is not possible to fully describe the
+ type of the first argument using the standard <code class="computeroutput"><span class="identifier">argument_type</span></code>
+ and <code class="computeroutput"><span class="identifier">first_argument_type</span></code> nested
+ typedefs. Libraries that need adaptable function objects in order to function
+ might not like <code class="computeroutput"><span class="identifier">mem_fn</span></code>.
+ </p>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h3 class="title">
+<a name="mem_fn.faq.does_mem_fn_work_with_com_method"></a><a class="link" href="mem_fn.html#mem_fn.faq.does_mem_fn_work_with_com_method" title="Does mem_fn work with COM methods?">Does <code class="computeroutput"><span class="identifier">mem_fn</span></code> work with COM methods?</a>
+</h3></div></div></div>
+<p>
+ Yes, if you <a class="link" href="mem_fn.html#mem_fn.implementation.stdcall" title="__stdcall, __cdecl, and __fastcall Support">`#define BOOST_MEM_FN_ENABLE_STDCALL</a>.
+ </p>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h3 class="title">
+<a name="mem_fn.faq.why_isn_t_boost_mem_fn_enable_st"></a><a class="link" href="mem_fn.html#mem_fn.faq.why_isn_t_boost_mem_fn_enable_st" title="Why isn't BOOST_MEM_FN_ENABLE_STDCALL defined automatically?">Why isn't
+ <code class="computeroutput"><span class="identifier">BOOST_MEM_FN_ENABLE_STDCALL</span></code>
+ defined automatically?</a>
+</h3></div></div></div>
+<p>
+ Non-portable extensions, in general, should default to off to prevent vendor
+ lock-in. Had <code class="computeroutput"><span class="identifier">BOOST_MEM_FN_ENABLE_STDCALL</span></code>
+ been defined automatically, you could have accidentally taken advantage of
+ it without realizing that your code is, perhaps, no longer portable. In addition,
+ it is possible for the default calling convention to be <code class="computeroutput"><span class="identifier">__stdcall</span></code>,
+ in which case enabling <code class="computeroutput"><span class="identifier">__stdcall</span></code>
+ support will result in duplicate definitions.
+ </p>
+</div>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h2 class="title" style="clear: both">
+<a name="mem_fn.interface"></a><a class="link" href="mem_fn.html#mem_fn.interface" title="Interface">Interface</a>
+</h2></div></div></div>
+<div class="section">
+<div class="titlepage"><div><div><h3 class="title">
+<a name="mem_fn.interface.synopsys"></a><a class="link" href="mem_fn.html#mem_fn.interface.synopsys" title="Synopsis">Synopsis</a>
+</h3></div></div></div>
+<pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">boost</span>
+<span class="special">{</span>
+ <span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> <span class="identifier">T</span> <span class="special">*</span> <a class="link" href="mem_fn.html#get_pointer_1"><code class="computeroutput"><span class="identifier">get_pointer</span></code></a><span class="special">(</span><span class="identifier">T</span> <span class="special">*</span> <span class="identifier">p</span><span class="special">);</span>
+
+ <span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> <span class="emphasis"><em>unspecified-1</em></span> <a class="link" href="mem_fn.html#mem_fn_1"><code class="computeroutput"><span class="identifier">mem_fn</span></code></a><span class="special">(</span><span class="identifier">R</span> <span class="special">(</span><span class="identifier">T</span><span class="special">::*</span><span class="identifier">pmf</span><span class="special">)</span> <span class="special">());</span>
+
+ <span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> <span class="emphasis"><em>unspecified-2</em></span> <a class="link" href="mem_fn.html#mem_fn_2"><code class="computeroutput"><span class="identifier">mem_fn</span></code></a><span class="special">(</span><span class="identifier">R</span> <span class="special">(</span><span class="identifier">T</span><span class="special">::*</span><span class="identifier">pmf</span><span class="special">)</span> <span class="special">()</span> <span class="keyword">const</span><span class="special">);</span>
+
+ <span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> <span class="emphasis"><em>unspecified-2-1</em></span> <a class="link" href="mem_fn.html#mem_fn_2_1"><code class="computeroutput"><span class="identifier">mem_fn</span></code></a><span class="special">(</span><span class="identifier">R</span> <span class="identifier">T</span><span class="special">::*</span><span class="identifier">pm</span><span class="special">);</span>
+
+ <span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A1</span><span class="special">></span> <span class="emphasis"><em>unspecified-3</em></span> <a class="link" href="mem_fn.html#mem_fn_3"><code class="computeroutput"><span class="identifier">mem_fn</span></code></a><span class="special">(</span><span class="identifier">R</span> <span class="special">(</span><span class="identifier">T</span><span class="special">::*</span><span class="identifier">pmf</span><span class="special">)</span> <span class="special">(</span><span class="identifier">A1</span><span class="special">));</span>
+
+ <span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A1</span><span class="special">></span> <span class="emphasis"><em>unspecified-4</em></span> <a class="link" href="mem_fn.html#mem_fn_4"><code class="computeroutput"><span class="identifier">mem_fn</span></code></a><span class="special">(</span><span class="identifier">R</span> <span class="special">(</span><span class="identifier">T</span><span class="special">::*</span><span class="identifier">pmf</span><span class="special">)</span> <span class="special">(</span><span class="identifier">A1</span><span class="special">)</span> <span class="keyword">const</span><span class="special">);</span>
+
+ <span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A1</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A2</span><span class="special">></span> <span class="emphasis"><em>unspecified-5</em></span> <a class="link" href="mem_fn.html#mem_fn_5"><code class="computeroutput"><span class="identifier">mem_fn</span></code></a><span class="special">(</span><span class="identifier">R</span> <span class="special">(</span><span class="identifier">T</span><span class="special">::*</span><span class="identifier">pmf</span><span class="special">)</span> <span class="special">(</span><span class="identifier">A1</span><span class="special">,</span> <span class="identifier">A2</span><span class="special">));</span>
+
+ <span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A1</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A2</span><span class="special">></span> <span class="emphasis"><em>unspecified-6</em></span> <a class="link" href="mem_fn.html#mem_fn_6"><code class="computeroutput"><span class="identifier">mem_fn</span></code></a><span class="special">(</span><span class="identifier">R</span> <span class="special">(</span><span class="identifier">T</span><span class="special">::*</span><span class="identifier">pmf</span><span class="special">)</span> <span class="special">(</span><span class="identifier">A1</span><span class="special">,</span> <span class="identifier">A2</span><span class="special">)</span> <span class="keyword">const</span><span class="special">);</span>
+
+ <span class="comment">// implementation defined number of additional overloads for more arguments</span>
+<span class="special">}</span>
+</pre>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h3 class="title">
+<a name="mem_fn.interface.common_requirements"></a><a class="link" href="mem_fn.html#mem_fn.interface.common_requirements" title="Common requirements">Common requirements</a>
+</h3></div></div></div>
+<p>
+ All <span class="emphasis"><em>unspecified-N</em></span> types mentioned in the Synopsis are
+ <span class="emphasis"><em>CopyConstructible</em></span> and <span class="emphasis"><em>Assignable</em></span>.
+ Their copy constructors and assignment operators do not throw exceptions.
+ <span class="emphasis"><em>unspecified-N</em></span><code class="computeroutput"><span class="special">::</span><span class="identifier">result_type</span></code> is defined as the return type
+ of the member function pointer passed as an argument to <code class="computeroutput"><span class="identifier">mem_fn</span></code>
+ (<code class="computeroutput"><span class="identifier">R</span></code> in the Synopsis.) <span class="emphasis"><em>unspecified-2-1</em></span><code class="computeroutput"><span class="special">::</span><span class="identifier">result_type</span></code>
+ is defined as <code class="computeroutput"><span class="identifier">R</span></code>.
+ </p>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h3 class="title">
+<a name="mem_fn.interface.get_pointer"></a><a class="link" href="mem_fn.html#mem_fn.interface.get_pointer" title="get_pointer"><code class="computeroutput"><span class="identifier">get_pointer</span></code></a>
+</h3></div></div></div>
+<a name="get_pointer_1"></a><pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> <span class="identifier">T</span> <span class="special">*</span> <span class="identifier">get_pointer</span><span class="special">(</span><span class="identifier">T</span> <span class="special">*</span> <span class="identifier">p</span><span class="special">)</span>
+</pre>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
+<li class="listitem">
+ <span class="emphasis"><em>Returns:</em></span> <code class="computeroutput"><span class="identifier">p</span></code>.
+ </li>
+<li class="listitem">
+ <span class="emphasis"><em>Throws:</em></span> Nothing.
+ </li>
+</ul></div>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h3 class="title">
+<a name="mem_fn.interface.mem_fn"></a><a class="link" href="mem_fn.html#mem_fn.interface.mem_fn" title="mem_fn"><code class="computeroutput"><span class="identifier">mem_fn</span></code></a>
+</h3></div></div></div>
+<a name="mem_fn_1"></a><pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> <span class="emphasis"><em>unspecified-1</em></span> <span class="identifier">mem_fn</span><span class="special">(</span><span class="identifier">R</span> <span class="special">(</span><span class="identifier">T</span><span class="special">::*</span><span class="identifier">pmf</span><span class="special">)</span> <span class="special">())</span>
+</pre>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
+<li class="listitem">
+ <span class="emphasis"><em>Returns:</em></span> a function object ϝ such that the
+ expression ϝ<code class="computeroutput"><span class="special">(</span><span class="identifier">t</span><span class="special">)</span></code> is equivalent to <code class="computeroutput"><span class="special">(</span><span class="identifier">t</span><span class="special">.*</span><span class="identifier">pmf</span><span class="special">)()</span></code>
+ when <code class="computeroutput"><span class="identifier">t</span></code> is an l-value
+ of type <code class="computeroutput"><span class="identifier">T</span></code> or derived,
+ <code class="computeroutput"><span class="special">(</span><span class="identifier">get_pointer</span><span class="special">(</span><span class="identifier">t</span><span class="special">)->*</span><span class="identifier">pmf</span><span class="special">)()</span></code> otherwise.
+ </li>
+<li class="listitem">
+ <span class="emphasis"><em>Throws:</em></span> Nothing.
+ </li>
+</ul></div>
+<a name="mem_fn_2"></a><pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> <span class="emphasis"><em>unspecified-2</em></span> <span class="identifier">mem_fn</span><span class="special">(</span><span class="identifier">R</span> <span class="special">(</span><span class="identifier">T</span><span class="special">::*</span><span class="identifier">pmf</span><span class="special">)</span> <span class="special">()</span> <span class="keyword">const</span><span class="special">)</span>
+</pre>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
+<li class="listitem">
+ <span class="emphasis"><em>Returns:</em></span> a function object ϝ such that the
+ expression ϝ<code class="computeroutput"><span class="special">(</span><span class="identifier">t</span><span class="special">)</span></code> is equivalent to <code class="computeroutput"><span class="special">(</span><span class="identifier">t</span><span class="special">.*</span><span class="identifier">pmf</span><span class="special">)()</span></code>
+ when <code class="computeroutput"><span class="identifier">t</span></code> is of type <code class="computeroutput"><span class="identifier">T</span></code> <span class="emphasis"><em>[</em></span><code class="computeroutput"><span class="keyword">const</span></code><span class="emphasis"><em>]</em></span> or derived,
+ <code class="computeroutput"><span class="special">(</span><span class="identifier">get_pointer</span><span class="special">(</span><span class="identifier">t</span><span class="special">)->*</span><span class="identifier">pmf</span><span class="special">)()</span></code> otherwise.
+ </li>
+<li class="listitem">
+ <span class="emphasis"><em>Throws:</em></span> Nothing.
+ </li>
+</ul></div>
+<a name="mem_fn_2_1"></a><pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> <span class="emphasis"><em>unspecified-2-1</em></span> <span class="identifier">mem_fn</span><span class="special">(</span><span class="identifier">R</span> <span class="identifier">T</span><span class="special">::*</span><span class="identifier">pm</span><span class="special">)</span>
+</pre>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
+<li class="listitem">
+ <span class="emphasis"><em>Returns:</em></span> a function object ϝ such that the
+ expression ϝ<code class="computeroutput"><span class="special">(</span><span class="identifier">t</span><span class="special">)</span></code> is equivalent to <code class="computeroutput"><span class="identifier">t</span><span class="special">.*</span><span class="identifier">pm</span></code>
+ when <code class="computeroutput"><span class="identifier">t</span></code> is of type <code class="computeroutput"><span class="identifier">T</span></code> <span class="emphasis"><em>[</em></span><code class="computeroutput"><span class="keyword">const</span></code><span class="emphasis"><em>]</em></span> or derived,
+ <code class="computeroutput"><span class="identifier">get_pointer</span><span class="special">(</span><span class="identifier">t</span><span class="special">)->*</span><span class="identifier">pm</span></code> otherwise.
+ </li>
+<li class="listitem">
+ <span class="emphasis"><em>Throws:</em></span> Nothing.
+ </li>
+</ul></div>
+<a name="mem_fn_3"></a><pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A1</span><span class="special">></span> <span class="emphasis"><em>unspecified-3</em></span> <span class="identifier">mem_fn</span><span class="special">(</span><span class="identifier">R</span> <span class="special">(</span><span class="identifier">T</span><span class="special">::*</span><span class="identifier">pmf</span><span class="special">)</span> <span class="special">(</span><span class="identifier">A1</span><span class="special">))</span>
+</pre>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
+<li class="listitem">
+ <span class="emphasis"><em>Returns:</em></span> a function object ϝ such that the
+ expression ϝ<code class="computeroutput"><span class="special">(</span><span class="identifier">t</span><span class="special">,</span> <span class="identifier">a1</span><span class="special">)</span></code> is equivalent to <code class="computeroutput"><span class="special">(</span><span class="identifier">t</span><span class="special">.*</span><span class="identifier">pmf</span><span class="special">)(</span><span class="identifier">a1</span><span class="special">)</span></code>
+ when <code class="computeroutput"><span class="identifier">t</span></code> is an l-value
+ of type <code class="computeroutput"><span class="identifier">T</span></code> or derived,
+ <code class="computeroutput"><span class="special">(</span><span class="identifier">get_pointer</span><span class="special">(</span><span class="identifier">t</span><span class="special">)->*</span><span class="identifier">pmf</span><span class="special">)(</span><span class="identifier">a1</span><span class="special">)</span></code> otherwise.
+ </li>
+<li class="listitem">
+ <span class="emphasis"><em>Throws:</em></span> Nothing.
+ </li>
+</ul></div>
+<a name="mem_fn_4"></a><pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A1</span><span class="special">></span> <span class="emphasis"><em>unspecified-4</em></span> <span class="identifier">mem_fn</span><span class="special">(</span><span class="identifier">R</span> <span class="special">(</span><span class="identifier">T</span><span class="special">::*</span><span class="identifier">pmf</span><span class="special">)</span> <span class="special">(</span><span class="identifier">A1</span><span class="special">)</span> <span class="keyword">const</span><span class="special">)</span>
+</pre>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
+<li class="listitem">
+ <span class="emphasis"><em>Returns:</em></span> a function object ϝ such that the
+ expression ϝ<code class="computeroutput"><span class="special">(</span><span class="identifier">t</span><span class="special">,</span> <span class="identifier">a1</span><span class="special">)</span></code> is equivalent to <code class="computeroutput"><span class="special">(</span><span class="identifier">t</span><span class="special">.*</span><span class="identifier">pmf</span><span class="special">)(</span><span class="identifier">a1</span><span class="special">)</span></code>
+ when <code class="computeroutput"><span class="identifier">t</span></code> is of type <code class="computeroutput"><span class="identifier">T</span></code> <span class="emphasis"><em>[</em></span><code class="computeroutput"><span class="keyword">const</span></code><span class="emphasis"><em>]</em></span> or derived,
+ <code class="computeroutput"><span class="special">(</span><span class="identifier">get_pointer</span><span class="special">(</span><span class="identifier">t</span><span class="special">)->*</span><span class="identifier">pmf</span><span class="special">)(</span><span class="identifier">a1</span><span class="special">)</span></code> otherwise.
+ </li>
+<li class="listitem">
+ <span class="emphasis"><em>Throws:</em></span> Nothing.
+ </li>
+</ul></div>
+<a name="mem_fn_5"></a><pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A1</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A2</span><span class="special">></span> <span class="emphasis"><em>unspecified-5</em></span> <span class="identifier">mem_fn</span><span class="special">(</span><span class="identifier">R</span> <span class="special">(</span><span class="identifier">T</span><span class="special">::*</span><span class="identifier">pmf</span><span class="special">)</span> <span class="special">(</span><span class="identifier">A1</span><span class="special">,</span> <span class="identifier">A2</span><span class="special">))</span>
+</pre>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
+<li class="listitem">
+ <span class="emphasis"><em>Returns:</em></span> a function object ϝ such that the
+ expression ϝ<code class="computeroutput"><span class="special">(</span><span class="identifier">t</span><span class="special">,</span> <span class="identifier">a1</span><span class="special">,</span> <span class="identifier">a2</span><span class="special">)</span></code> is equivalent to <code class="computeroutput"><span class="special">(</span><span class="identifier">t</span><span class="special">.*</span><span class="identifier">pmf</span><span class="special">)(</span><span class="identifier">a1</span><span class="special">,</span> <span class="identifier">a2</span><span class="special">)</span></code>
+ when <code class="computeroutput"><span class="identifier">t</span></code> is an l-value
+ of type <code class="computeroutput"><span class="identifier">T</span></code> or derived,
+ <code class="computeroutput"><span class="special">(</span><span class="identifier">get_pointer</span><span class="special">(</span><span class="identifier">t</span><span class="special">)->*</span><span class="identifier">pmf</span><span class="special">)(</span><span class="identifier">a1</span><span class="special">,</span> <span class="identifier">a2</span><span class="special">)</span></code> otherwise.
+ </li>
+<li class="listitem">
+ <span class="emphasis"><em>Throws:</em></span> Nothing.
+ </li>
+</ul></div>
+<a name="mem_fn_6"></a><pre class="programlisting"><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">R</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A1</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A2</span><span class="special">></span> <span class="emphasis"><em>unspecified-6</em></span> <span class="identifier">mem_fn</span><span class="special">(</span><span class="identifier">R</span> <span class="special">(</span><span class="identifier">T</span><span class="special">::*</span><span class="identifier">pmf</span><span class="special">)</span> <span class="special">(</span><span class="identifier">A1</span><span class="special">,</span> <span class="identifier">A2</span><span class="special">)</span> <span class="keyword">const</span><span class="special">)</span>
+</pre>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
+<li class="listitem">
+ <span class="emphasis"><em>Returns:</em></span> a function object ϝ such that the
+ expression ϝ<code class="computeroutput"><span class="special">(</span><span class="identifier">t</span><span class="special">,</span> <span class="identifier">a1</span><span class="special">,</span> <span class="identifier">a2</span><span class="special">)</span></code> is equivalent to <code class="computeroutput"><span class="special">(</span><span class="identifier">t</span><span class="special">.*</span><span class="identifier">pmf</span><span class="special">)(</span><span class="identifier">a1</span><span class="special">,</span> <span class="identifier">a2</span><span class="special">)</span></code>
+ when <code class="computeroutput"><span class="identifier">t</span></code> is of type <code class="computeroutput"><span class="identifier">T</span></code> <span class="emphasis"><em>[</em></span><code class="computeroutput"><span class="keyword">const</span></code><span class="emphasis"><em>]</em></span> or derived,
+ <code class="computeroutput"><span class="special">(</span><span class="identifier">get_pointer</span><span class="special">(</span><span class="identifier">t</span><span class="special">)->*</span><span class="identifier">pmf</span><span class="special">)(</span><span class="identifier">a1</span><span class="special">,</span> <span class="identifier">a2</span><span class="special">)</span></code> otherwise.
+ </li>
+<li class="listitem">
+ <span class="emphasis"><em>Throws:</em></span> Nothing.
+ </li>
+</ul></div>
+</div>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h2 class="title" style="clear: both">
+<a name="mem_fn.implementation"></a><a class="link" href="mem_fn.html#mem_fn.implementation" title="Implementation">Implementation</a>
+</h2></div></div></div>
+<div class="section">
+<div class="titlepage"><div><div><h3 class="title">
+<a name="mem_fn.implementation.files"></a><a class="link" href="mem_fn.html#mem_fn.implementation.files" title="Files">Files</a>
+</h3></div></div></div>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
+<li class="listitem">
+ <a href="../../../../boost/mem_fn.hpp" target="_top">boost/mem_fn.hpp</a> (main
+ header)
+ </li>
+<li class="listitem">
+ <a href="../../../../boost/bind/mem_fn_cc.hpp" target="_top">boost/bind/mem_fn_cc.hpp</a>
+ (used by <code class="computeroutput"><span class="identifier">mem_fn</span><span class="special">.</span><span class="identifier">hpp</span></code>, do not include directly)
+ </li>
+<li class="listitem">
+ <a href="../../../../boost/bind/mem_fn_vw.hpp" target="_top">boost/bind/mem_fn_vw.hpp</a>
+ (used by <code class="computeroutput"><span class="identifier">mem_fn</span><span class="special">.</span><span class="identifier">hpp</span></code>, do not include directly)
+ </li>
+<li class="listitem">
+ <a href="../../../../boost/bind/mem_fn_template.hpp" target="_top">boost/bind/mem_fn_template.hpp</a>
+ (used by <code class="computeroutput"><span class="identifier">mem_fn</span><span class="special">.</span><span class="identifier">hpp</span></code>, do not include directly)
+ </li>
+<li class="listitem">
+ <a href="../../test/mem_fn_test.cpp" target="_top">libs/bind/test/mem_fn_test.cpp</a>
+ (test)
+ </li>
+<li class="listitem">
+ <a href="../../test/mem_fn_derived_test.cpp" target="_top">libs/bind/test/mem_fn_derived_test.cpp</a>
+ (test with derived objects)
+ </li>
+<li class="listitem">
+ <a href="../../test/mem_fn_fastcall_test.cpp" target="_top">libs/bind/test/mem_fn_fastcall_test.cpp</a>
+ (test for <code class="computeroutput"><span class="identifier">__fastcall</span></code>)
+ </li>
+<li class="listitem">
+ <a href="../../test/mem_fn_stdcall_test.cpp" target="_top">libs/bind/test/mem_fn_stdcall_test.cpp</a>
+ (test for <code class="computeroutput"><span class="identifier">__stdcall</span></code>)
+ </li>
+<li class="listitem">
+ <a href="../../test/mem_fn_void_test.cpp" target="_top">libs/bind/test/mem_fn_void_test.cpp</a>
+ (test for <code class="computeroutput"><span class="keyword">void</span></code> returns)
+ </li>
+</ul></div>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h3 class="title">
+<a name="mem_fn.implementation.dependencies"></a><a class="link" href="mem_fn.html#mem_fn.implementation.dependencies" title="Dependencies">Dependencies</a>
+</h3></div></div></div>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
+ <a href="../../../../libs/config/config.htm" target="_top">Boost.Config</a>
+ </li></ul></div>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h3 class="title">
+<a name="mem_fn.implementation.number_of_arguments"></a><a class="link" href="mem_fn.html#mem_fn.implementation.number_of_arguments" title="Number of Arguments">Number of
+ Arguments</a>
+</h3></div></div></div>
+<p>
+ This implementation supports member functions with up to eight arguments.
+ This is not an inherent limitation of the design, but an implementation detail.
+ </p>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h3 class="title">
+<a name="mem_fn.implementation.stdcall"></a><a class="link" href="mem_fn.html#mem_fn.implementation.stdcall" title="__stdcall, __cdecl, and __fastcall Support"><code class="computeroutput"><span class="identifier">__stdcall</span></code>,
+ <code class="computeroutput"><span class="identifier">__cdecl</span></code>, and <code class="computeroutput"><span class="identifier">__fastcall</span></code> Support</a>
+</h3></div></div></div>
+<p>
+ Some platforms allow several types of member functions that differ by their
+ calling convention (the rules by which the function is invoked: how are arguments
+ passed, how is the return value handled, and who cleans up the stack - if
+ any.)
+ </p>
+<p>
+ For example, Windows API functions and COM interface member functions use
+ a calling convention known as <code class="computeroutput"><span class="identifier">__stdcall</span></code>.
+ Borland VCL components use <code class="computeroutput"><span class="identifier">__fastcall</span></code>.
+ UDK, the component model of OpenOffice.org, uses <code class="computeroutput"><span class="identifier">__cdecl</span></code>.
+ </p>
+<p>
+ To use <code class="computeroutput"><span class="identifier">mem_fn</span></code> with <code class="computeroutput"><span class="identifier">__stdcall</span></code> member functions, <code class="computeroutput"><span class="preprocessor">#define</span></code> the macro <code class="computeroutput"><span class="identifier">BOOST_MEM_FN_ENABLE_STDCALL</span></code>
+ before including <code class="computeroutput"><span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">mem_fn</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code>.
+ </p>
+<p>
+ To use <code class="computeroutput"><span class="identifier">mem_fn</span></code> with <code class="computeroutput"><span class="identifier">__fastcall</span></code> member functions, <code class="computeroutput"><span class="preprocessor">#define</span></code> the macro <code class="computeroutput"><span class="identifier">BOOST_MEM_FN_ENABLE_FASTCALL</span></code>
+ before including <code class="computeroutput"><span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">mem_fn</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code>.
+ </p>
+<p>
+ To use <code class="computeroutput"><span class="identifier">mem_fn</span></code> with <code class="computeroutput"><span class="identifier">__cdecl</span></code> member functions, <code class="computeroutput"><span class="preprocessor">#define</span></code> the macro <code class="computeroutput"><span class="identifier">BOOST_MEM_FN_ENABLE_CDECL</span></code>
+ before including <code class="computeroutput"><span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">mem_fn</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code>.
+ </p>
+<p>
+ <span class="bold"><strong>It is best to define these macros in the project options,
+ via <code class="computeroutput"><span class="special">-</span><span class="identifier">D</span></code>
+ on the command line, or as the first line in the translation unit (.cpp file)
+ where <code class="computeroutput"><span class="identifier">mem_fn</span></code> is used.</strong></span>
+ Not following this rule can lead to obscure errors when a header includes
+ <code class="computeroutput"><span class="identifier">mem_fn</span><span class="special">.</span><span class="identifier">hpp</span></code> before the macro has been defined.
+ </p>
+<p>
+ <span class="emphasis"><em>[Note:</em></span> this is a non-portable extension. It is not part
+ of the interface.<span class="emphasis"><em>]</em></span>
+ </p>
+<p>
+ <span class="emphasis"><em>[Note:</em></span> Some compilers provide only minimal support for
+ the <code class="computeroutput"><span class="identifier">__stdcall</span></code> keyword.<span class="emphasis"><em>]</em></span>
+ </p>
+</div>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h2 class="title" style="clear: both">
+<a name="mem_fn.acknowledgements"></a><a class="link" href="mem_fn.html#mem_fn.acknowledgements" title="Acknowledgements">Acknowledgements</a>
+</h2></div></div></div>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
+<li class="listitem">
+ Rene Jager's initial suggestion of using traits classes to make <code class="computeroutput"><span class="identifier">mem_fn</span></code> adapt to user-defined smart pointers
+ inspired the <code class="computeroutput"><span class="identifier">get_pointer</span></code>-based
+ design.
+ </li>
+<li class="listitem">
+ Numerous improvements were suggested during the formal review period by
+ Richard Crossley, Jens Maurer, Ed Brey, and others. Review manager was
+ Darin Adler.
+ </li>
+<li class="listitem">
+ Steve Anichini pointed out that COM interfaces use <code class="computeroutput"><span class="identifier">__stdcall</span></code>.
+ </li>
+<li class="listitem">
+ Dave Abrahams modified <code class="computeroutput"><span class="identifier">bind</span></code>
+ and <code class="computeroutput"><span class="identifier">mem_fn</span></code> to support
+ <code class="computeroutput"><span class="keyword">void</span></code> returns on deficient
+ compilers.
+ </li>
+<li class="listitem">
+ Daniel Boelzle pointed out that UDK uses <code class="computeroutput"><span class="identifier">__cdecl</span></code>.
+ </li>
+</ul></div>
+<p>
+ This documentation was ported to Quickbook by Agustín Bergé.
+ </p>
+</div>
+</div>
+<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
+<td align="left"><p><small>Last revised: July 07, 2017 at 11:19:31 GMT</small></p></td>
+<td align="right"><div class="copyright-footer"></div></td>
+</tr></table>
+<hr>
+<div class="spirit-nav"></div>
+</body>
+</html>