1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>Reference</title> 6<link rel="stylesheet" href="../../../doc/src/boostbook.css" type="text/css"> 7<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 8<link rel="home" href="../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> 9<link rel="up" href="../function.html" title="Chapter 16. Boost.Function"> 10<link rel="prev" href="tutorial.html" title="Tutorial"> 11<link rel="next" href="../boost/bad_function_call.html" title="Class bad_function_call"> 12</head> 13<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 14<table cellpadding="2" width="100%"><tr> 15<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../boost.png"></td> 16<td align="center"><a href="../../../index.html">Home</a></td> 17<td align="center"><a href="../../../libs/libraries.htm">Libraries</a></td> 18<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 19<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 20<td align="center"><a href="../../../more/index.htm">More</a></td> 21</tr></table> 22<hr> 23<div class="spirit-nav"> 24<a accesskey="p" href="tutorial.html"><img src="../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../function.html"><img src="../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../boost/bad_function_call.html"><img src="../../../doc/src/images/next.png" alt="Next"></a> 25</div> 26<div class="section"> 27<div class="titlepage"><div><div><h2 class="title" style="clear: both"> 28<a name="function.reference"></a>Reference</h2></div></div></div> 29<div class="toc"><dl class="toc"> 30<dt><span class="section"><a href="reference.html#function.definitions">Definitions</a></span></dt> 31<dt><span class="section"><a href="reference.html#header.boost.function_hpp">Header <boost/function.hpp></a></span></dt> 32<dt><span class="section"><a href="reference.html#header.boost.function_equal_hpp">Header <boost/function_equal.hpp></a></span></dt> 33</dl></div> 34<div class="section"> 35<div class="titlepage"><div><div><h3 class="title"> 36<a name="function.definitions"></a>Definitions</h3></div></div></div> 37<p> 38 </p> 39<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> 40<li class="listitem"> 41<p>A function object <code class="computeroutput">f</code> is 42 <span class="emphasis"><em>compatible</em></span> if for the given set of argument 43 types <code class="computeroutput">Arg1</code>, 44 <code class="computeroutput">Arg2</code>, ..., 45 <code class="computeroutput">ArgN</code> and a 46 return type <code class="computeroutput">ResultType</code>, the 47 appropriate following function is well-formed: 48</p> 49<pre class="programlisting"> 50 <span class="emphasis"><em>// if ResultType is not <span class="bold"><strong>void</strong></span></em></span> 51 ResultType foo(Arg1 arg1, Arg2 arg2, ..., Arg<span class="emphasis"><em>N</em></span> arg<span class="emphasis"><em>N</em></span>) 52 { 53 <span class="bold"><strong>return</strong></span> f(arg1, arg2, ..., arg<span class="emphasis"><em>N</em></span>); 54 } 55 56 <span class="emphasis"><em>// if ResultType is <span class="bold"><strong>void</strong></span></em></span> 57 ResultType foo(Arg1 arg1, Arg2 arg2, ..., Arg<span class="emphasis"><em>N</em></span> arg<span class="emphasis"><em>N</em></span>) 58 { 59 f(arg1, arg2, ..., arg<span class="emphasis"><em>N</em></span>); 60 } 61</pre> 62<p> A special provision is made for pointers to member 63 functions. Though they are not function objects, Boost.Function 64 will adapt them internally to function objects. This requires 65 that a pointer to member function of the form <code class="computeroutput">R 66 (X::*mf)(Arg1, Arg2, ..., ArgN) 67 cv-quals</code> be adapted to a 68 function object with the following function call operator 69 overloads: 70</p> 71<pre class="programlisting"> 72 <span class="bold"><strong>template</strong></span><<span class="bold"><strong>typename P</strong></span>> 73 R <span class="bold"><strong>operator</strong></span>()(<span class="emphasis"><em>cv-quals</em></span> P& x, Arg1 arg1, Arg2 arg2, ..., Arg<span class="emphasis"><em>N</em></span> arg<span class="emphasis"><em>N</em></span>) <span class="bold"><strong>const</strong></span> 74 { 75 <span class="bold"><strong>return</strong></span> (*x).*mf(arg1, arg2, ..., arg<span class="emphasis"><em>N</em></span>); 76 } 77</pre> 78<p> 79</p> 80</li> 81<li class="listitem"><p>A function object <code class="computeroutput">f</code> of 82 type <code class="computeroutput">F</code> is 83 <span class="emphasis"><em>stateless</em></span> if it is a function pointer or if 84 <code class="computeroutput">boost::is_stateless<F></code> 85 is true. The construction of or copy to a Boost.Function object 86 from a stateless function object will not cause exceptions to be 87 thrown and will not allocate any storage. 88 </p></li> 89</ul></div> 90<p> 91</p> 92</div> 93<div class="section"> 94<div class="titlepage"><div><div><h3 class="title"> 95<a name="header.boost.function_hpp"></a>Header <<a href="../../../boost/function.hpp" target="_top">boost/function.hpp</a>></h3></div></div></div> 96<pre class="synopsis"><span class="keyword">namespace</span> <span class="identifier">boost</span> <span class="special">{</span> 97 <span class="keyword">class</span> <a class="link" href="../boost/bad_function_call.html" title="Class bad_function_call">bad_function_call</a><span class="special">;</span> 98 <span class="keyword">class</span> <a class="link" href="../boost/function_base.html" title="Class function_base">function_base</a><span class="special">;</span> 99 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> R<span class="special">,</span> <span class="keyword">typename</span> T1<span class="special">,</span> <span class="keyword">typename</span> T2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="keyword">typename</span> TN<span class="special">></span> 100 <span class="keyword">class</span> <a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special">;</span> 101 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T1<span class="special">,</span> <span class="keyword">typename</span> T2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="keyword">typename</span> TN<span class="special">></span> 102 <span class="keyword">void</span> <a class="link" href="../boost/functionN.html#boost.functionN.swap"><span class="identifier">swap</span></a><span class="special">(</span><a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special"><</span><span class="identifier">T1</span><span class="special">,</span> <span class="identifier">T2</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">TN</span><span class="special">></span><span class="special">&</span><span class="special">,</span> <a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special"><</span><span class="identifier">T1</span><span class="special">,</span> <span class="identifier">T2</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">TN</span><span class="special">></span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 103 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T1<span class="special">,</span> <span class="keyword">typename</span> T2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="keyword">typename</span> TN<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 104 <span class="keyword">bool</span> <a class="link" href="../boost/functionN.html#id-1_3_17_6_2_1_3_28_1_1-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special"><</span><span class="identifier">T1</span><span class="special">,</span> <span class="identifier">T2</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">TN</span><span class="special">></span><span class="special">&</span><span class="special">,</span> <span class="identifier">Functor</span><span class="special">)</span><span class="special">;</span> 105 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T1<span class="special">,</span> <span class="keyword">typename</span> T2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="keyword">typename</span> TN<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 106 <span class="keyword">bool</span> <a class="link" href="../boost/functionN.html#id-1_3_17_6_2_1_3_28_1_2-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="identifier">Functor</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special"><</span><span class="identifier">T1</span><span class="special">,</span> <span class="identifier">T2</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">TN</span><span class="special">></span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 107 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T1<span class="special">,</span> <span class="keyword">typename</span> T2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="keyword">typename</span> TN<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 108 <span class="keyword">bool</span> <a class="link" href="../boost/functionN.html#id-1_3_17_6_2_1_3_28_1_3-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special"><</span><span class="identifier">T1</span><span class="special">,</span> <span class="identifier">T2</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">TN</span><span class="special">></span><span class="special">&</span><span class="special">,</span> 109 reference_wrapper<span class="special"><</span><span class="identifier">Functor</span><span class="special">></span><span class="special">)</span><span class="special">;</span> 110 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T1<span class="special">,</span> <span class="keyword">typename</span> T2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="keyword">typename</span> TN<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 111 <span class="keyword">bool</span> <a class="link" href="../boost/functionN.html#id-1_3_17_6_2_1_3_28_1_4-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span>reference_wrapper<span class="special"><</span><span class="identifier">Functor</span><span class="special">></span><span class="special">,</span> 112 <span class="keyword">const</span> <a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special"><</span><span class="identifier">T1</span><span class="special">,</span> <span class="identifier">T2</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">TN</span><span class="special">></span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 113 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T1<span class="special">,</span> <span class="keyword">typename</span> T2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="keyword">typename</span> TN<span class="special">,</span> <span class="keyword">typename</span> U1<span class="special">,</span> 114 <span class="keyword">typename</span> U2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="keyword">typename</span> UN<span class="special">></span> 115 <span class="keyword">void</span> <a class="link" href="../boost/functionN.html#id-1_3_17_6_2_1_3_28_1_5-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special"><</span><span class="identifier">T1</span><span class="special">,</span> <span class="identifier">T2</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">TN</span><span class="special">></span><span class="special">&</span><span class="special">,</span> 116 <span class="keyword">const</span> <a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special"><</span><span class="identifier">U1</span><span class="special">,</span> <span class="identifier">U2</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">UN</span><span class="special">></span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 117 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T1<span class="special">,</span> <span class="keyword">typename</span> T2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="keyword">typename</span> TN<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 118 <span class="keyword">bool</span> <a class="link" href="../boost/functionN.html#id-1_3_17_6_2_1_3_28_2_1-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special"><</span><span class="identifier">T1</span><span class="special">,</span> <span class="identifier">T2</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">TN</span><span class="special">></span><span class="special">&</span><span class="special">,</span> <span class="identifier">Functor</span><span class="special">)</span><span class="special">;</span> 119 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T1<span class="special">,</span> <span class="keyword">typename</span> T2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="keyword">typename</span> TN<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 120 <span class="keyword">bool</span> <a class="link" href="../boost/functionN.html#id-1_3_17_6_2_1_3_28_2_2-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="identifier">Functor</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special"><</span><span class="identifier">T1</span><span class="special">,</span> <span class="identifier">T2</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">TN</span><span class="special">></span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 121 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T1<span class="special">,</span> <span class="keyword">typename</span> T2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="keyword">typename</span> TN<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 122 <span class="keyword">bool</span> <a class="link" href="../boost/functionN.html#id-1_3_17_6_2_1_3_28_2_3-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special"><</span><span class="identifier">T1</span><span class="special">,</span> <span class="identifier">T2</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">TN</span><span class="special">></span><span class="special">&</span><span class="special">,</span> 123 reference_wrapper<span class="special"><</span><span class="identifier">Functor</span><span class="special">></span><span class="special">)</span><span class="special">;</span> 124 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T1<span class="special">,</span> <span class="keyword">typename</span> T2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="keyword">typename</span> TN<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 125 <span class="keyword">bool</span> <a class="link" href="../boost/functionN.html#id-1_3_17_6_2_1_3_28_2_4-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span>reference_wrapper<span class="special"><</span><span class="identifier">Functor</span><span class="special">></span><span class="special">,</span> 126 <span class="keyword">const</span> <a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special"><</span><span class="identifier">T1</span><span class="special">,</span> <span class="identifier">T2</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">TN</span><span class="special">></span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 127 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T1<span class="special">,</span> <span class="keyword">typename</span> T2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="keyword">typename</span> TN<span class="special">,</span> <span class="keyword">typename</span> U1<span class="special">,</span> 128 <span class="keyword">typename</span> U2<span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="keyword">typename</span> UN<span class="special">></span> 129 <span class="keyword">void</span> <a class="link" href="../boost/functionN.html#id-1_3_17_6_2_1_3_28_2_5-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special"><</span><span class="identifier">T1</span><span class="special">,</span> <span class="identifier">T2</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">TN</span><span class="special">></span><span class="special">&</span><span class="special">,</span> 130 <span class="keyword">const</span> <a class="link" href="../boost/functionN.html" title="Class template functionN">functionN</a><span class="special"><</span><span class="identifier">U1</span><span class="special">,</span> <span class="identifier">U2</span><span class="special">,</span> <span class="special">...</span><span class="special">,</span> <span class="identifier">UN</span><span class="special">></span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 131 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Signature<span class="special">></span> <span class="keyword">class</span> <a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special">;</span> 132 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Signature<span class="special">></span> 133 <span class="keyword">void</span> <a class="link" href="../boost/function.html#boost.function.swap"><span class="identifier">swap</span></a><span class="special">(</span><a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special"><</span><span class="identifier">Signature</span><span class="special">></span><span class="special">&</span><span class="special">,</span> <a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special"><</span><span class="identifier">Signature</span><span class="special">></span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 134 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Signature<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 135 <span class="keyword">bool</span> <a class="link" href="../boost/function.html#id-1_3_17_6_2_1_4_32_1_1-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special"><</span><span class="identifier">Signature</span><span class="special">></span><span class="special">&</span><span class="special">,</span> <span class="identifier">Functor</span><span class="special">)</span><span class="special">;</span> 136 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Signature<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 137 <span class="keyword">bool</span> <a class="link" href="../boost/function.html#id-1_3_17_6_2_1_4_32_1_2-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="identifier">Functor</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special"><</span><span class="identifier">Signature</span><span class="special">></span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 138 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Signature<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 139 <span class="keyword">bool</span> <a class="link" href="../boost/function.html#id-1_3_17_6_2_1_4_32_1_3-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special"><</span><span class="identifier">Signature</span><span class="special">></span><span class="special">&</span><span class="special">,</span> reference_wrapper<span class="special"><</span><span class="identifier">Functor</span><span class="special">></span><span class="special">)</span><span class="special">;</span> 140 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Signature<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 141 <span class="keyword">bool</span> <a class="link" href="../boost/function.html#id-1_3_17_6_2_1_4_32_1_4-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span>reference_wrapper<span class="special"><</span><span class="identifier">Functor</span><span class="special">></span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special"><</span><span class="identifier">Signature</span><span class="special">></span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 142 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Signature1<span class="special">,</span> <span class="keyword">typename</span> Signature2<span class="special">></span> 143 <span class="keyword">void</span> <a class="link" href="../boost/function.html#id-1_3_17_6_2_1_4_32_1_5-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special"><</span><span class="identifier">Signature1</span><span class="special">></span><span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special"><</span><span class="identifier">Signature2</span><span class="special">></span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 144 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Signature<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 145 <span class="keyword">bool</span> <a class="link" href="../boost/function.html#id-1_3_17_6_2_1_4_32_2_1-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special"><</span><span class="identifier">Signature</span><span class="special">></span><span class="special">&</span><span class="special">,</span> <span class="identifier">Functor</span><span class="special">)</span><span class="special">;</span> 146 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Signature<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 147 <span class="keyword">bool</span> <a class="link" href="../boost/function.html#id-1_3_17_6_2_1_4_32_2_2-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="identifier">Functor</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special"><</span><span class="identifier">Signature</span><span class="special">></span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 148 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Signature<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 149 <span class="keyword">bool</span> <a class="link" href="../boost/function.html#id-1_3_17_6_2_1_4_32_2_3-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special"><</span><span class="identifier">Signature</span><span class="special">></span><span class="special">&</span><span class="special">,</span> reference_wrapper<span class="special"><</span><span class="identifier">Functor</span><span class="special">></span><span class="special">)</span><span class="special">;</span> 150 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Signature<span class="special">,</span> <span class="keyword">typename</span> Functor<span class="special">></span> 151 <span class="keyword">bool</span> <a class="link" href="../boost/function.html#id-1_3_17_6_2_1_4_32_2_4-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span>reference_wrapper<span class="special"><</span><span class="identifier">Functor</span><span class="special">></span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special"><</span><span class="identifier">Signature</span><span class="special">></span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 152 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Signature1<span class="special">,</span> <span class="keyword">typename</span> Signature2<span class="special">></span> 153 <span class="keyword">void</span> <a class="link" href="../boost/function.html#id-1_3_17_6_2_1_4_32_2_5-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special"><</span><span class="identifier">Signature1</span><span class="special">></span><span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="../boost/function.html" title="Class template function">function</a><span class="special"><</span><span class="identifier">Signature2</span><span class="special">></span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 154<span class="special">}</span></pre> 155</div> 156<div class="section"> 157<div class="titlepage"><div><div><h3 class="title"> 158<a name="header.boost.function_equal_hpp"></a>Header <<a href="../../../boost/function_equal.hpp" target="_top">boost/function_equal.hpp</a>></h3></div></div></div> 159<pre class="synopsis"><span class="keyword">namespace</span> <span class="identifier">boost</span> <span class="special">{</span> 160 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> F<span class="special">,</span> <span class="keyword">typename</span> G<span class="special">></span> <span class="keyword">bool</span> <a class="link" href="../boost/function_equal.html" title="Function template function_equal"><span class="identifier">function_equal</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">F</span><span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">G</span><span class="special">&</span><span class="special">)</span><span class="special">;</span> 161<span class="special">}</span></pre> 162</div> 163</div> 164<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 165<td align="left"></td> 166<td align="right"><div class="copyright-footer">Copyright © 2001-2004 Douglas Gregor<p>Use, modification and distribution is subject to the Boost 167 Software License, Version 1.0. (See accompanying file 168 <code class="filename">LICENSE_1_0.txt</code> 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> 169</div></td> 170</tr></table> 171<hr> 172<div class="spirit-nav"> 173<a accesskey="p" href="tutorial.html"><img src="../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../function.html"><img src="../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../boost/bad_function_call.html"><img src="../../../doc/src/images/next.png" alt="Next"></a> 174</div> 175</body> 176</html> 177
