1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
|
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>fused</title>
<link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.76.1">
<link rel="home" href="../../../index.html" title="Chapter 1. Fusion 2.1">
<link rel="up" href="../adapters.html" title="Adapters">
<link rel="prev" href="../adapters.html" title="Adapters">
<link rel="next" href="fused_procedure.html" title="fused_procedure">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table cellpadding="2" width="100%"><tr>
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../boost.png"></td>
<td align="center"><a href="../../../../../../../index.html">Home</a></td>
<td align="center"><a href="../../../../../../../libs/libraries.htm">Libraries</a></td>
<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
<td align="center"><a href="../../../../../../../more/index.htm">More</a></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="../adapters.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../adapters.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="fused_procedure.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.functional.adapters.fused"></a><a class="link" href="fused.html" title="fused">fused</a>
</h4></div></div></div>
<h6>
<a name="fusion.functional.adapters.fused.h0"></a>
<span><a name="fusion.functional.adapters.fused.description"></a></span><a class="link" href="fused.html#fusion.functional.adapters.fused.description">Description</a>
</h6>
<p>
An unary <a class="link" href="../concepts/poly.html" title="Polymorphic Function Object">Polymorphic Function
Object</a> adapter template for <a class="link" href="../concepts/def_callable.html" title="Deferred Callable Object">Deferred
Callable Object</a> target functions. It takes a <a class="link" href="../../sequence/concepts/forward_sequence.html" title="Forward Sequence">Forward
Sequence</a> that contains the arguments for the target function.
</p>
<p>
The type of the target function is allowed to be const qualified or a reference.
Const qualification is preserved and propagated appropriately (in other
words, only const versions of <code class="literal">operator()</code> can be used
for a target function object that is const or, if the target function object
is held by value, the adapter is const - these semantics have nothing to
do with the const qualification of a member function, which is referring
to the type of object pointed to by <code class="literal">this</code> which is specified
with the first element in the sequence passed to the adapter).
</p>
<p>
If the target function is a pointer to a class members, the corresponding
object can be specified as a reference, pointer, or smart pointer. In case
of the latter, a freestanding <code class="literal">get_pointer</code> function must
be defined (Boost provides this function for <code class="literal">std::auto_ptr</code>
and <a href="http://www.boost.org/libs/smart_ptr/shared_ptr.htm" target="_top"><code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">shared_ptr</span></code></a>).
</p>
<h6>
<a name="fusion.functional.adapters.fused.h1"></a>
<span><a name="fusion.functional.adapters.fused.header"></a></span><a class="link" href="fused.html#fusion.functional.adapters.fused.header">Header</a>
</h6>
<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">functional</span><span class="special">/</span><span class="identifier">adapter</span><span class="special">/</span><span class="identifier">fused</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
</pre>
<h6>
<a name="fusion.functional.adapters.fused.h2"></a>
<span><a name="fusion.functional.adapters.fused.synopsis"></a></span><a class="link" href="fused.html#fusion.functional.adapters.fused.synopsis">Synopsis</a>
</h6>
<pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">typename</span> <span class="identifier">Function</span><span class="special">></span>
<span class="keyword">class</span> <span class="identifier">fused</span><span class="special">;</span>
</pre>
<h6>
<a name="fusion.functional.adapters.fused.h3"></a>
<span><a name="fusion.functional.adapters.fused.template_parameters"></a></span><a class="link" href="fused.html#fusion.functional.adapters.fused.template_parameters">Template
parameters</a>
</h6>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Description
</p>
</th>
<th>
<p>
Default
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">Function</span></code>
</p>
</td>
<td>
<p>
A <a class="link" href="../concepts/def_callable.html" title="Deferred Callable Object">Deferred
Callable Object</a>
</p>
</td>
<td>
</td>
</tr></tbody>
</table></div>
<h6>
<a name="fusion.functional.adapters.fused.h4"></a>
<span><a name="fusion.functional.adapters.fused.model_of"></a></span><a class="link" href="fused.html#fusion.functional.adapters.fused.model_of">Model
of</a>
</h6>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<a class="link" href="../concepts/poly.html" title="Polymorphic Function Object">Polymorphic Function
Object</a>
</li>
<li class="listitem">
<a class="link" href="../concepts/def_callable.html" title="Deferred Callable Object">Deferred Callable
Object</a>
</li>
</ul></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><code class="computeroutput"><span class="identifier">R</span></code></span></dt>
<dd><p>
A possibly const qualified <a class="link" href="../concepts/def_callable.html" title="Deferred Callable Object">Deferred
Callable Object</a> type or reference type thereof
</p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">r</span></code></span></dt>
<dd><p>
An object convertible to <code class="computeroutput"><span class="identifier">R</span></code>
</p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">s</span></code></span></dt>
<dd><p>
A <a class="link" href="../../sequence.html" title="Sequence">Sequence</a> of arguments that
are accepted by <code class="computeroutput"><span class="identifier">r</span></code>
</p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">f</span></code></span></dt>
<dd><p>
An instance of <code class="computeroutput"><span class="identifier">fused</span><span class="special"><</span><span class="identifier">R</span><span class="special">></span></code>
</p></dd>
</dl>
</div>
<h6>
<a name="fusion.functional.adapters.fused.h5"></a>
<span><a name="fusion.functional.adapters.fused.expression_semantics"></a></span><a class="link" href="fused.html#fusion.functional.adapters.fused.expression_semantics">Expression
Semantics</a>
</h6>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Semantics
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">fused</span><span class="special"><</span><span class="identifier">R</span><span class="special">>(</span><span class="identifier">r</span><span class="special">)</span></code>
</p>
</td>
<td>
<p>
Creates a fused function as described above, initializes the
target function with <code class="computeroutput"><span class="identifier">r</span></code>.
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">fused</span><span class="special"><</span><span class="identifier">R</span><span class="special">>()</span></code>
</p>
</td>
<td>
<p>
Creates a fused function as described above, attempts to use
<code class="computeroutput"><span class="identifier">R</span></code>'s default constructor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></code>
</p>
</td>
<td>
<p>
Calls <code class="computeroutput"><span class="identifier">r</span></code> with
the elements in <code class="computeroutput"><span class="identifier">s</span></code>
as its arguments.
</p>
</td>
</tr>
</tbody>
</table></div>
<h6>
<a name="fusion.functional.adapters.fused.h6"></a>
<span><a name="fusion.functional.adapters.fused.example"></a></span><a class="link" href="fused.html#fusion.functional.adapters.fused.example">Example</a>
</h6>
<pre class="programlisting"><span class="identifier">fused</span><span class="special"><</span> <a href="http://www.sgi.com/tech/stl/plus.html" target="_top"><code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">plus</span></code></a><span class="special"><</span><span class="keyword">long</span><span class="special">></span> <span class="special">></span> <span class="identifier">f</span><span class="special">;</span>
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">f</span><span class="special">(</span><a class="link" href="../../container/generation/functions/make_vector.html" title="make_vector"><code class="computeroutput"><span class="identifier">make_vector</span></code></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2l</span><span class="special">))</span> <span class="special">==</span> <span class="number">3l</span><span class="special">);</span>
</pre>
<h6>
<a name="fusion.functional.adapters.fused.h7"></a>
<span><a name="fusion.functional.adapters.fused.see_also"></a></span><a class="link" href="fused.html#fusion.functional.adapters.fused.see_also">See
also</a>
</h6>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<a class="link" href="fused_procedure.html" title="fused_procedure"><code class="computeroutput"><span class="identifier">fused_procedure</span></code></a>
</li>
<li class="listitem">
<a class="link" href="fused_function_object.html" title="fused_function_object"><code class="computeroutput"><span class="identifier">fused_function_object</span></code></a>
</li>
<li class="listitem">
<a class="link" href="../invocation/functions/invoke.html" title="invoke"><code class="computeroutput"><span class="identifier">invoke</span></code></a>
</li>
<li class="listitem">
<a class="link" href="../generation/functions/mk_fused.html" title="make_fused"><code class="computeroutput"><span class="identifier">make_fused</span></code></a>
</li>
<li class="listitem">
<a class="link" href="../../support/deduce.html" title="deduce"><code class="computeroutput"><span class="identifier">deduce</span></code></a>
</li>
</ul></div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright © 2001-2006, 2011 Joel de Guzman, Dan Marsden, Tobias
Schwinger<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p>
</div></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="../adapters.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../adapters.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="fused_procedure.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a>
</div>
</body>
</html>
|
