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1 | <?xml version="1.0" encoding="utf-8" ?> |
2 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> | |
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6 | <meta name="generator" content="Docutils 0.7: http://docutils.sourceforge.net/" /> | |
7 | <title>The MPL Reference Manual: transform_view</title> | |
8 | <link rel="stylesheet" href="../style.css" type="text/css" /> | |
9 | </head> | |
10 | <body class="docframe refmanual"> | |
11 | <table class="header"><tr class="header"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./single-view.html" class="navigation-link">Prev</a> <a href="./zip-view.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./single-view.html" class="navigation-link">Back</a> <a href="./zip-view.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./views.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></span></td> | |
12 | <td class="header-group page-location"><a href="../refmanual.html" class="navigation-link">Front Page</a> / <a href="./sequences.html" class="navigation-link">Sequences</a> / <a href="./views.html" class="navigation-link">Views</a> / <a href="./transform-view.html" class="navigation-link">transform_view</a></td> | |
13 | </tr></table><div class="header-separator"></div> | |
14 | <div class="section" id="transform-view"> | |
15 | <h1><a class="toc-backref" href="./views.html#id1422">transform_view</a></h1> | |
16 | <div class="section" id="id159"> | |
17 | <h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3> | |
18 | <pre class="literal-block"> | |
19 | template< | |
20 | typename Sequence | |
21 | , typename F | |
22 | > | |
23 | struct <a href="./transform-view.html" class="identifier">transform_view</a> | |
24 | { | |
25 | // <em>unspecified</em> | |
26 | // <em>...</em> | |
27 | }; | |
28 | </pre> | |
29 | </div> | |
30 | <div class="section" id="id160"> | |
31 | <h3><a class="subsection-title" href="#description" name="description">Description</a></h3> | |
32 | <p>A view the full range of <tt class="literal"><span class="pre">Sequence</span></tt>'s transformed elements.</p> | |
33 | </div> | |
34 | <div class="section" id="id161"> | |
35 | <h3><a class="subsection-title" href="#header" name="header">Header</a></h3> | |
36 | <pre class="literal-block"> | |
37 | #include <<a href="../../../../boost/mpl/transform_view.hpp" class="header">boost/mpl/transform_view.hpp</a>> | |
38 | </pre> | |
39 | </div> | |
40 | <div class="section" id="id162"> | |
41 | <h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3> | |
42 | <ul class="simple"> | |
43 | <li><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></li> | |
44 | </ul> | |
45 | </div> | |
46 | <div class="section" id="id163"> | |
47 | <h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3> | |
48 | <table border="1" class="docutils table"> | |
49 | <colgroup> | |
50 | <col width="19%" /> | |
51 | <col width="40%" /> | |
52 | <col width="40%" /> | |
53 | </colgroup> | |
54 | <thead valign="bottom"> | |
55 | <tr><th class="head">Parameter</th> | |
56 | <th class="head">Requirement</th> | |
57 | <th class="head">Description</th> | |
58 | </tr> | |
59 | </thead> | |
60 | <tbody valign="top"> | |
61 | <tr><td><tt class="literal"><span class="pre">Sequence</span></tt></td> | |
62 | <td><a class="reference internal" href="./forward-sequence.html">Forward Sequence</a></td> | |
63 | <td>A sequence to wrap.</td> | |
64 | </tr> | |
65 | <tr><td><tt class="literal"><span class="pre">F</span></tt></td> | |
66 | <td>Unary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a></td> | |
67 | <td>A transformation.</td> | |
68 | </tr> | |
69 | </tbody> | |
70 | </table> | |
71 | </div> | |
72 | <div class="section" id="id164"> | |
73 | <h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3> | |
74 | <p>The semantics of an expression are defined only | |
75 | where they differ from, or are not defined in <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>.</p> | |
76 | <p>In the following table, <tt class="literal"><span class="pre">v</span></tt> is an instance of <tt class="literal"><span class="pre"><a href="./transform-view.html" class="identifier">transform_view</a></span></tt>, <tt class="literal"><span class="pre">s</span></tt> is an arbitrary | |
77 | <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>, and <tt class="literal"><span class="pre">f</span></tt> is an unary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a>.</p> | |
78 | <table border="1" class="docutils table"> | |
79 | <colgroup> | |
80 | <col width="37%" /> | |
81 | <col width="63%" /> | |
82 | </colgroup> | |
83 | <thead valign="bottom"> | |
84 | <tr><th class="head">Expression</th> | |
85 | <th class="head">Semantics</th> | |
86 | </tr> | |
87 | </thead> | |
88 | <tbody valign="top"> | |
89 | <tr><td><pre class="first last literal-block"> | |
90 | <a href="./transform-view.html" class="identifier">transform_view</a><s,f> | |
91 | <a href="./transform-view.html" class="identifier">transform_view</a><s,f>::type | |
92 | </pre> | |
93 | </td> | |
94 | <td>A lazy <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a> such that for each <tt class="literal"><span class="pre">i</span></tt> in the | |
95 | range [<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a><v>::type</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a><v>::type</span></tt>) and each <tt class="literal"><span class="pre">j</span></tt> in for in the range | |
96 | [<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a><s>::type</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a><s>::type</span></tt>) <tt class="literal"><span class="pre"><a href="./deref.html" class="identifier">deref</a><i>::type</span></tt> is identical to | |
97 | <tt class="literal"><span class="pre"><a href="./apply.html" class="identifier">apply</a><</span> <span class="pre">f,</span> <span class="pre"><a href="./deref.html" class="identifier">deref</a><j>::type</span> <span class="pre">>::type</span></tt>.</td> | |
98 | </tr> | |
99 | <tr><td><tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a><v>::type</span></tt></td> | |
100 | <td>The size of <tt class="literal"><span class="pre">v</span></tt>; | |
101 | <tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a><v>::value</span> <span class="pre">==</span> <span class="pre"><a href="./size.html" class="identifier">size</a><s>::value</span></tt>; | |
102 | linear complexity; see <a class="reference internal" href="./forward-sequence.html">Forward Sequence</a>.</td> | |
103 | </tr> | |
104 | </tbody> | |
105 | </table> | |
106 | </div> | |
107 | <div class="section" id="id165"> | |
108 | <h3><a class="subsection-title" href="#example" name="example">Example</a></h3> | |
109 | <p>Find the largest type in a sequence.</p> | |
110 | <pre class="literal-block"> | |
111 | typedef <a href="./vector.html" class="identifier">vector</a><int,long,char,char[50],double> types; | |
112 | typedef <a href="./max-element.html" class="identifier">max_element</a>< | |
113 | <a href="./transform-view.html" class="identifier">transform_view</a>< types, size_of<_> > | |
114 | >::type iter; | |
115 | ||
116 | <a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>( <a href="./deref.html" class="identifier">deref</a><iter>::type::value, ==, 50 ); | |
117 | </pre> | |
118 | </div> | |
119 | <div class="section" id="id166"> | |
120 | <h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3> | |
121 | <p><a class="reference internal" href="./sequences.html">Sequences</a>, <a class="reference internal" href="./views.html">Views</a>, <a class="reference internal" href="./filter-view.html">filter_view</a>, <a class="reference internal" href="./joint-view.html">joint_view</a>, <a class="reference internal" href="./zip-view.html">zip_view</a>, <a class="reference internal" href="./iterator-range.html">iterator_range</a></p> | |
122 | <!-- Sequences/Views//zip_view --> | |
123 | </div> | |
124 | </div> | |
125 | ||
126 | <div class="footer-separator"></div> | |
127 | <table class="footer"><tr class="footer"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./single-view.html" class="navigation-link">Prev</a> <a href="./zip-view.html" class="navigation-link">Next</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./single-view.html" class="navigation-link">Back</a> <a href="./zip-view.html" class="navigation-link">Along</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./views.html" class="navigation-link">Up</a> <a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator"> | </span><span class="navigation-group"><a href="./refmanual_toc.html" class="navigation-link">Full TOC</a></span></td> | |
128 | <td><div class="copyright-footer"><div class="copyright">Copyright © 2001-2009 Aleksey Gurtovoy and David Abrahams</div> | |
129 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
130 | file LICENSE_1_0.txt or copy at <a class="reference external" href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)</div></td></tr></table></body> | |
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