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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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5<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
6<meta name="generator" content="Docutils 0.3.6: http://docutils.sourceforge.net/" />
7<title>The MPL Reference Manual: copy</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="./transformation-algorithms.html" class="navigation-link">Prev</a>&nbsp;<a href="./copy-if.html" class="navigation-link">Next</a></span><span class="navigation-group-separator">&nbsp;|&nbsp;</span><span class="navigation-group">Back&nbsp;<a href="./copy-if.html" class="navigation-link">Along</a></span><span class="navigation-group-separator">&nbsp;|&nbsp;</span><span class="navigation-group"><a href="./transformation-algorithms.html" class="navigation-link">Up</a>&nbsp;<a href="../refmanual.html" class="navigation-link">Home</a></span><span class="navigation-group-separator">&nbsp;|&nbsp;</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="./algorithms.html" class="navigation-link">Algorithms</a> / <a href="./transformation-algorithms.html" class="navigation-link">Transformation Algorithms</a> / <a href="./copy.html" class="navigation-link">copy</a></td>
13</tr></table><div class="header-separator"></div>
14<div class="section" id="copy">
15<h1><a class="toc-backref" href="./transformation-algorithms.html#id414" name="copy">copy</a></h1>
16<div class="section" id="copy-synopsis">
17<h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3>
18<pre class="literal-block">
19template&lt;
20      typename Sequence
21    , typename In = <em>unspecified</em>
22    &gt;
23struct <a href="./copy.html" class="identifier">copy</a>
24{
25    typedef <em>unspecified</em> type;
26};
27</pre>
28</div>
29<div class="section" id="copy-description">
30<h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
31<p>Returns a copy of the original sequence.</p>
32<p>[<em>Note:</em> This wording applies to a no-inserter version(s) of the algorithm. See the
33<cite>Expression semantics</cite> subsection for a precise specification of the algorithm's
34details in all cases — <em>end note</em>]</p>
35</div>
36<div class="section" id="copy-header">
37<h3><a class="subsection-title" href="#header" name="header">Header</a></h3>
38<pre class="literal-block">
39#include &lt;<a href="../../../../boost/mpl/copy.hpp" class="header">boost/mpl/copy.hpp</a>&gt;
40</pre>
41</div>
42<div class="section" id="copy-model-of">
43<h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3>
44<p><a class="reference" href="./reversible-algorithm.html">Reversible Algorithm</a></p>
45</div>
46<div class="section" id="copy-parameters">
47<h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3>
48<table border="1" class="table">
49<colgroup>
50<col width="21%" />
51<col width="37%" />
52<col width="42%" />
53</colgroup>
54<thead valign="bottom">
55<tr><th>Parameter</th>
56<th>Requirement</th>
57<th>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" href="./forward-sequence.html">Forward Sequence</a></td>
63<td>A sequence to copy.</td>
64</tr>
65<tr><td><tt class="literal"><span class="pre">In</span></tt></td>
66<td><a class="reference" href="./inserter.html">Inserter</a></td>
67<td>An inserter.</td>
68</tr>
69</tbody>
70</table>
71</div>
72<div class="section" id="copy-expression-semantics">
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
75where they differ from, or are not defined in <a class="reference" href="./reversible-algorithm.html">Reversible Algorithm</a>.</p>
76<p>For any <a class="reference" href="./forward-sequence.html">Forward Sequence</a> <tt class="literal"><span class="pre">s</span></tt>, and an <a class="reference" href="./inserter.html">Inserter</a> <tt class="literal"><span class="pre">in</span></tt>:</p>
77<pre class="literal-block">
78typedef <a href="./copy.html" class="identifier">copy</a>&lt;s,in&gt;::type r;
79</pre>
80<table class="field-list" frame="void" rules="none">
81<col class="field-name" />
82<col class="field-body" />
83<tbody valign="top">
84<tr class="field"><th class="field-name">Return type:</th><td class="field-body">A type.</td>
85</tr>
86<tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><p class="first">Equivalent to</p>
87<pre class="last literal-block">
88typedef <a href="./fold.html" class="identifier">fold</a>&lt; s,in::state,in::operation &gt;::type r;
89</pre>
90</td>
91</tr>
92</tbody>
93</table>
94</div>
95<div class="section" id="copy-complexity">
96<h3><a class="subsection-title" href="#complexity" name="complexity">Complexity</a></h3>
97<p>Linear. Exactly <tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a>&lt;s&gt;::value</span></tt> applications of <tt class="literal"><span class="pre">in::operation</span></tt>.</p>
98</div>
99<div class="section" id="copy-example">
100<h3><a class="subsection-title" href="#example" name="example">Example</a></h3>
101<pre class="literal-block">
102typedef <a href="./vector-c.html" class="identifier">vector_c</a>&lt;int,0,1,2,3,4,5,6,7,8,9&gt; numbers;
103typedef <a href="./copy.html" class="identifier">copy</a>&lt;
104      <a href="./range-c.html" class="identifier">range_c</a>&lt;int,10,20&gt;
105    , <a href="./back-inserter.html" class="identifier">back_inserter</a>&lt; numbers &gt;
106    &gt;::type result;
107
108<a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>( <a href="./size.html" class="identifier">size</a>&lt;result&gt;::value, ==, 20 );
109<a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( <a href="./equal.html" class="identifier">equal</a>&lt; result,<a href="./range-c.html" class="identifier">range_c</a>&lt;int,0,20&gt; > ));
110</pre>
111</div>
112<div class="section" id="copy-see-also">
113<h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3>
114<p><a class="reference" href="./transformation-algorithms.html">Transformation Algorithms</a>, <a class="reference" href="./reversible-algorithm.html">Reversible Algorithm</a>, <a class="refentry reference" href="./reverse-copy.html"><tt class="refentry literal"><span class="pre">reverse_copy</span></tt></a>, <a class="refentry reference" href="./copy-if.html"><tt class="refentry literal"><span class="pre">copy_if</span></tt></a>, <a class="refentry reference" href="./transform.html"><tt class="refentry literal"><span class="pre">transform</span></tt></a></p>
115<!-- modtime: November 13, 2004 01:54:21 +0000 -->
116<!-- Algorithms/Transformation Algorithms//copy_if |20 -->
117</div>
118</div>
119
120<div class="footer-separator"></div>
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