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updated boost from 1_33_1 to 1_34_1
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4<!-- Copyright Aleksey Gurtovoy 2006. Distributed under the Boost -->
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9<meta name="generator" content="Docutils 0.3.6: http://docutils.sourceforge.net/" />
10<title>The MPL Reference Manual: push_back</title>
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13<body class="docframe refmanual">
14<table class="header"><tr class="header"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./pop-front.html" class="navigation-link">Prev</a>&nbsp;<a href="./push-front.html" class="navigation-link">Next</a></span><span class="navigation-group-separator">&nbsp;|&nbsp;</span><span class="navigation-group"><a href="./pop-front.html" class="navigation-link">Back</a>&nbsp;<a href="./push-front.html" class="navigation-link">Along</a></span><span class="navigation-group-separator">&nbsp;|&nbsp;</span><span class="navigation-group"><a href="./intrinsic-metafunctions.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>
15<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="./intrinsic-metafunctions.html" class="navigation-link">Intrinsic Metafunctions</a> / <a href="./push-back.html" class="navigation-link">push_back</a></td>
16</tr></table><div class="header-separator"></div>
17<div class="section" id="push-back">
18<h1><a class="toc-backref" href="./intrinsic-metafunctions.html#id371" name="push-back">push_back</a></h1>
19<div class="section" id="push-synopsis">
20<h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3>
21<pre class="literal-block">
22template&lt;
23      typename Sequence
24    , typename T
25    &gt;
26struct <a href="./push-back.html" class="identifier">push_back</a>
27{
28    typedef <em>unspecified</em> type;
29};
30</pre>
31</div>
32<div class="section" id="push-description">
33<h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
34<p><tt class="literal"><span class="pre"><a href="./push-back.html" class="identifier">push_back</a></span></tt> performs an insertion at the end of the sequence with guaranteed <em>O(1)</em>
35complexity.</p>
36</div>
37<div class="section" id="push-header">
38<h3><a class="subsection-title" href="#header" name="header">Header</a></h3>
39<pre class="literal-block">
40#include &lt;<a href="../../../../boost/mpl/push_back.hpp" class="header">boost/mpl/push_back.hpp</a>&gt;
41</pre>
42</div>
43<div class="section" id="push-model-of">
44<h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3>
45<p><a class="reference" href="./tag-dispatched.html">Tag Dispatched Metafunction</a></p>
46</div>
47<div class="section" id="push-parameters">
48<h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3>
49<table border="1" class="table">
50<colgroup>
51<col width="16%" />
52<col width="33%" />
53<col width="51%" />
54</colgroup>
55<thead valign="bottom">
56<tr><th>Parameter</th>
57<th>Requirement</th>
58<th>Description</th>
59</tr>
60</thead>
61<tbody valign="top">
62<tr><td><tt class="literal"><span class="pre">Sequence</span></tt></td>
63<td><a class="reference" href="./back-extensible-sequence.html">Back Extensible Sequence</a></td>
64<td>A sequence to insert into.</td>
65</tr>
66<tr><td><tt class="literal"><span class="pre">T</span></tt></td>
67<td>Any type</td>
68<td>The element to be inserted.</td>
69</tr>
70</tbody>
71</table>
72</div>
73<div class="section" id="push-expression-semantics">
74<h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3>
75<p>For any <a class="reference" href="./back-extensible-sequence.html">Back Extensible Sequence</a> <tt class="literal"><span class="pre">s</span></tt> and arbitrary type <tt class="literal"><span class="pre">x</span></tt>:</p>
76<pre class="literal-block">
77typedef <a href="./push-back.html" class="identifier">push_back</a>&lt;s,x&gt;::type r;
78</pre>
79<table class="field-list" frame="void" rules="none">
80<col class="field-name" />
81<col class="field-body" />
82<tbody valign="top">
83<tr class="field"><th class="field-name">Return type:</th><td class="field-body"><a class="reference" href="./back-extensible-sequence.html">Back Extensible Sequence</a>.</td>
84</tr>
85<tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><p class="first">Equivalent to</p>
86<pre class="last literal-block">
87typedef <a href="./insert.html" class="identifier">insert</a>&lt; s,<a href="./end.html" class="identifier">end</a>&lt;s&gt;::type,x &gt;::type r;
88</pre>
89</td>
90</tr>
91<tr class="field"><th class="field-name">Postcondition:</th><td class="field-body"><p class="first"><tt class="literal"><span class="pre"><a href="./back.html" class="identifier">back</a>&lt;r&gt;::type</span></tt> is identical to <tt class="literal"><span class="pre">x</span></tt>;</p>
92<pre class="last literal-block">
93<a href="./size.html" class="identifier">size</a>&lt;r&gt;::value == <a href="./size.html" class="identifier">size</a>&lt;s&gt;::value + 1
94</pre>
95</td>
96</tr>
97</tbody>
98</table>
99</div>
100<div class="section" id="push-complexity">
101<h3><a class="subsection-title" href="#complexity" name="complexity">Complexity</a></h3>
102<p>Amortized constant time.</p>
103</div>
104<div class="section" id="push-example">
105<h3><a class="subsection-title" href="#example" name="example">Example</a></h3>
106<pre class="literal-block">
107typedef <a href="./vector-c.html" class="identifier">vector_c</a>&lt;bool,false,false,false,
108    true,true,true,false,false&gt; bools;
109
110typedef <a href="./push-back.html" class="identifier">push_back</a>&lt;bools,false_&gt;::type message;
111
112<a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>( <a href="./back.html" class="identifier">back</a>&lt;message&gt;::type::value, ==, false );
113<a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>(
114      ( <a href="./count-if.html" class="identifier">count_if</a>&lt;message, <a href="./equal-to.html" class="identifier">equal_to</a>&lt;_1,false_&gt; &gt;::value ), ==, 6
115    );
116</pre>
117</div>
118<div class="section" id="push-see-also">
119<h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3>
120<p><a class="reference" href="./back-extensible-sequence.html">Back Extensible Sequence</a>, <a class="refentry reference" href="./insert.html"><tt class="refentry literal"><span class="pre">insert</span></tt></a>, <a class="refentry reference" href="./pop-back.html"><tt class="refentry literal"><span class="pre">pop_back</span></tt></a>, <a class="refentry reference" href="./back.html"><tt class="refentry literal"><span class="pre">back</span></tt></a>, <a class="refentry reference" href="./push-front.html"><tt class="refentry literal"><span class="pre">push_front</span></tt></a></p>
121<!-- modtime: November 13, 2004 01:31:27 +0000 -->
122<!-- Sequences/Intrinsic Metafunctions//push_front -->
123</div>
124</div>
125
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