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7<title>The MPL Reference Manual: insert</title>
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10<body class="docframe refmanual">
11<table class="header"><tr class="header"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./has-key.html" class="navigation-link">Prev</a>&nbsp;<a href="./insert-range.html" class="navigation-link">Next</a></span><span class="navigation-group-separator">&nbsp;|&nbsp;</span><span class="navigation-group"><a href="./has-key.html" class="navigation-link">Back</a>&nbsp;<a href="./insert-range.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>
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="./intrinsic-metafunctions.html" class="navigation-link">Intrinsic Metafunctions</a> / <a href="./insert.html" class="navigation-link">insert</a></td>
13</tr></table><div class="header-separator"></div>
14<div class="section" id="insert">
15<h1><a class="toc-backref" href="./intrinsic-metafunctions.html#id1436">insert</a></h1>
16<div class="section" id="id274">
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 Pos
22 , typename T
23 &gt;
24struct <a href="./insert.html" class="identifier">insert</a>
25{
26 typedef <em>unspecified</em> type;
27};
28
29
30template&lt;
31 typename Sequence
32 , typename T
33 &gt;
34struct <a href="./insert.html" class="identifier">insert</a>
35{
36 typedef <em>unspecified</em> type;
37};
38</pre>
39</div>
40<div class="section" id="id275">
41<h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
42<p><tt class="literal"><span class="pre"><a href="./insert.html" class="identifier">insert</a></span></tt> is an <a class="reference internal" href="./terminology.html#overloaded-name">overloaded name</a>:</p>
43<ul class="simple">
44<li><tt class="literal"><span class="pre"><a href="./insert.html" class="identifier">insert</a>&lt;Sequence,Pos,T&gt;</span></tt> performs an insertion of
45type <tt class="literal"><span class="pre">T</span></tt> at an arbitrary position <tt class="literal"><span class="pre">Pos</span></tt> in <tt class="literal"><span class="pre">Sequence</span></tt>. <tt class="literal"><span class="pre">Pos</span></tt> is ignored is
46<tt class="literal"><span class="pre">Sequence</span></tt> is a model of <a class="reference internal" href="./extensible-associative-sequence.html">Extensible Associative Sequence</a>.</li>
47<li><tt class="literal"><span class="pre"><a href="./insert.html" class="identifier">insert</a>&lt;Sequence,T&gt;</span></tt> is a shortcut notation for <tt class="literal"><span class="pre"><a href="./insert.html" class="identifier">insert</a>&lt;Sequence,Pos,T&gt;</span></tt> for the
48case when <tt class="literal"><span class="pre">Sequence</span></tt> is a model of <a class="reference internal" href="./extensible-associative-sequence.html">Extensible Associative Sequence</a>.</li>
49</ul>
50</div>
51<div class="section" id="id276">
52<h3><a class="subsection-title" href="#header" name="header">Header</a></h3>
53<pre class="literal-block">
54#include &lt;<a href="../../../../boost/mpl/insert.hpp" class="header">boost/mpl/insert.hpp</a>&gt;
55</pre>
56</div>
57<div class="section" id="id277">
58<h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3>
59<p><a class="reference internal" href="./tag-dispatched-metafunction.html">Tag Dispatched Metafunction</a></p>
60</div>
61<div class="section" id="id278">
62<h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3>
63<table border="1" class="docutils table">
64<colgroup>
65<col width="15%" />
66<col width="36%" />
67<col width="48%" />
68</colgroup>
69<thead valign="bottom">
70<tr><th class="head">Parameter</th>
71<th class="head">Requirement</th>
72<th class="head">Description</th>
73</tr>
74</thead>
75<tbody valign="top">
76<tr><td><tt class="literal"><span class="pre">Sequence</span></tt></td>
77<td><a class="reference internal" href="./extensible-sequence.html">Extensible Sequence</a> or
78<a class="reference internal" href="./extensible-associative-sequence.html">Extensible Associative Sequence</a></td>
79<td>A sequence to insert into.</td>
80</tr>
81<tr><td><tt class="literal"><span class="pre">Pos</span></tt></td>
82<td><a class="reference internal" href="./forward-iterator.html">Forward Iterator</a></td>
83<td>An iterator in <tt class="literal"><span class="pre">Sequence</span></tt> specifying the
84insertion position.</td>
85</tr>
86<tr><td><tt class="literal"><span class="pre">T</span></tt></td>
87<td>Any type</td>
88<td>The element to be inserted.</td>
89</tr>
90</tbody>
91</table>
92</div>
93<div class="section" id="id279">
94<h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3>
95<div class="expression-semantics compound">
96<p class="compound-first">For any <a class="reference internal" href="./extensible-sequence.html">Extensible Sequence</a> <tt class="literal"><span class="pre">s</span></tt>, iterator <tt class="literal"><span class="pre">pos</span></tt> in <tt class="literal"><span class="pre">s</span></tt>, and arbitrary type <tt class="literal"><span class="pre">x</span></tt>:</p>
97<pre class="compound-middle literal-block">
98typedef <a href="./insert.html" class="identifier">insert</a>&lt;s,pos,x&gt;::type r;
99</pre>
100<table class="compound-last docutils field-list" frame="void" rules="none">
101<col class="field-name" />
102<col class="field-body" />
103<tbody valign="top">
104<tr class="field"><th class="field-name">Return type:</th><td class="field-body"><p class="first"><a class="reference internal" href="./extensible-sequence.html">Extensible Sequence</a></p>
105</td>
106</tr>
107<tr class="field"><th class="field-name">Precondition:</th><td class="field-body"><p class="first"><tt class="literal"><span class="pre">pos</span></tt> is an iterator in <tt class="literal"><span class="pre">s</span></tt>.</p>
108</td>
109</tr>
110<tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><p class="first"><tt class="literal"><span class="pre">r</span></tt> is a sequence, <a class="reference internal" href="./terminology.html#concept-identical">concept-identical</a> to <tt class="literal"><span class="pre">s</span></tt>, of the following elements:
111[<tt class="literal"><span class="pre"><a href="./begin.html" class="identifier">begin</a>&lt;s&gt;::type</span></tt>, <tt class="literal"><span class="pre">pos</span></tt>), <tt class="literal"><span class="pre">x</span></tt>, [<tt class="literal"><span class="pre">pos</span></tt>, <tt class="literal"><span class="pre"><a href="./end.html" class="identifier">end</a>&lt;s&gt;::type</span></tt>).</p>
112</td>
113</tr>
114<tr class="field"><th class="field-name">Postcondition:</th><td class="field-body"><p class="first">The relative order of the elements in <tt class="literal"><span class="pre">r</span></tt> is the same as in <tt class="literal"><span class="pre">s</span></tt>.</p>
115<pre class="literal-block">
116<a href="./at.html" class="identifier">at</a>&lt; r, <a href="./distance.html" class="identifier">distance</a>&lt; <a href="./begin.html" class="identifier">begin</a>&lt;s&gt;::type,pos &gt;::type &gt;::type
117</pre>
118<p>is identical to <tt class="literal"><span class="pre">x</span></tt>;</p>
119<pre class="last literal-block">
120<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;
121</pre>
122</td>
123</tr>
124</tbody>
125</table>
126</div>
127<div class="expression-semantics compound">
128<p class="compound-first">For any <a class="reference internal" href="./extensible-associative-sequence.html">Extensible Associative Sequence</a> <tt class="literal"><span class="pre">s</span></tt>, iterator <tt class="literal"><span class="pre">pos</span></tt> in <tt class="literal"><span class="pre">s</span></tt>,
129and arbitrary type <tt class="literal"><span class="pre">x</span></tt>:</p>
130<pre class="compound-middle literal-block">
131typedef <a href="./insert.html" class="identifier">insert</a>&lt;s,x&gt;::type r;
132</pre>
133<table class="compound-middle docutils field-list" frame="void" rules="none">
134<col class="field-name" />
135<col class="field-body" />
136<tbody valign="top">
137<tr class="field"><th class="field-name">Return type:</th><td class="field-body"><a class="reference internal" href="./extensible-associative-sequence.html">Extensible Associative Sequence</a></td>
138</tr>
139<tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><tt class="literal"><span class="pre">r</span></tt> is <a class="reference internal" href="./terminology.html#concept-identical">concept-identical</a> and equivalent to <tt class="literal"><span class="pre">s</span></tt>, except that
140<tt class="literal"><span class="pre"><a href="./at.html" class="identifier">at</a>&lt;</span> <span class="pre">r,</span> <span class="pre"><a href="./key-type.html" class="identifier">key_type</a>&lt;s,x&gt;::type</span> <span class="pre">&gt;::type</span></tt> is identical to <tt class="literal"><span class="pre"><a href="./value-type.html" class="identifier">value_type</a>&lt;s,x&gt;::type</span></tt>.</td>
141</tr>
142<tr class="field"><th class="field-name">Postcondition:</th><td class="field-body"><tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a>&lt;r&gt;::value</span> <span class="pre">==</span> <span class="pre"><a href="./size.html" class="identifier">size</a>&lt;s&gt;::value</span> <span class="pre">+</span> <span class="pre">1</span></tt>.</td>
143</tr>
144</tbody>
145</table>
146<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
147<pre class="compound-middle literal-block">
148typedef <a href="./insert.html" class="identifier">insert</a>&lt;s,pos,x&gt;::type r;
149</pre>
150<table class="compound-last docutils field-list" frame="void" rules="none">
151<col class="field-name" />
152<col class="field-body" />
153<tbody valign="top">
154<tr class="field"><th class="field-name">Return type:</th><td class="field-body"><a class="reference internal" href="./extensible-associative-sequence.html">Extensible Associative Sequence</a></td>
155</tr>
156<tr class="field"><th class="field-name">Precondition:</th><td class="field-body"><tt class="literal"><span class="pre">pos</span></tt> is an iterator in <tt class="literal"><span class="pre">s</span></tt>.</td>
157</tr>
158<tr class="field"><th class="field-name">Semantics:</th><td class="field-body">Equivalent to <tt class="literal"><span class="pre">typedef</span> <span class="pre"><a href="./insert.html" class="identifier">insert</a>&lt;s,x&gt;::type</span> <span class="pre">r</span></tt>; <tt class="literal"><span class="pre">pos</span></tt> is ignored.</td>
159</tr>
160</tbody>
161</table>
162</div>
163</div>
164<div class="section" id="id280">
165<h3><a class="subsection-title" href="#complexity" name="complexity">Complexity</a></h3>
166<table border="1" class="docutils table">
167<colgroup>
168<col width="45%" />
169<col width="55%" />
170</colgroup>
171<thead valign="bottom">
172<tr><th class="head">Sequence archetype</th>
173<th class="head">Complexity</th>
174</tr>
175</thead>
176<tbody valign="top">
177<tr><td><a class="reference internal" href="./extensible-associative-sequence.html">Extensible Associative Sequence</a></td>
178<td>Amortized constant time.</td>
179</tr>
180<tr><td><a class="reference internal" href="./extensible-sequence.html">Extensible Sequence</a></td>
181<td>Linear in the worst case, or amortized
182constant time.</td>
183</tr>
184</tbody>
185</table>
186</div>
187<div class="section" id="id281">
188<h3><a class="subsection-title" href="#example" name="example">Example</a></h3>
189<pre class="literal-block">
190typedef <a href="./vector-c.html" class="identifier">vector_c</a>&lt;int,0,1,3,4,5,6,7,8,9&gt; numbers;
191typedef <a href="./find.html" class="identifier">find</a>&lt; numbers,<a href="./integral-c.html" class="identifier">integral_c</a>&lt;int,3&gt; &gt;::type pos;
192typedef <a href="./insert.html" class="identifier">insert</a>&lt; numbers,pos,<a href="./integral-c.html" class="identifier">integral_c</a>&lt;int,2&gt; &gt;::type range;
193
194<a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>( <a href="./size.html" class="identifier">size</a>&lt;range&gt;::value, ==, 10 );
195<a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( <a href="./equal.html" class="identifier">equal</a>&lt; range,<a href="./range-c.html" class="identifier">range_c</a>&lt;int,0,10&gt; > ));
196</pre>
197<pre class="literal-block">
198typedef <a href="./map.html" class="identifier">map</a>&lt; mpl::<a href="./pair.html" class="identifier">pair</a>&lt;int,unsigned&gt; &gt; m;
199typedef <a href="./insert.html" class="identifier">insert</a>&lt;m,mpl::<a href="./pair.html" class="identifier">pair</a>&lt;char,long&gt; &gt;::type m1;
200
201<a href="./assert-relation.html" class="identifier">BOOST_MPL_ASSERT_RELATION</a>( <a href="./size.html" class="identifier">size</a>&lt;m1&gt;::value, ==, 2 );
202<a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( is_same&lt; <a href="./at.html" class="identifier">at</a>&lt;m1,int&gt;::type,unsigned &gt; ));
203<a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( is_same&lt; <a href="./at.html" class="identifier">at</a>&lt;m1,char&gt;::type,long > ));
204</pre>
205</div>
206<div class="section" id="id282">
207<h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3>
208<p><a class="reference internal" href="./extensible-sequence.html">Extensible Sequence</a>, <a class="reference internal" href="./extensible-associative-sequence.html">Extensible Associative Sequence</a>, <a class="reference internal" href="./insert-range.html">insert_range</a>, <a class="reference internal" href="./push-front.html">push_front</a>, <a class="reference internal" href="./push-back.html">push_back</a>, <a class="reference internal" href="./erase.html">erase</a></p>
209<!-- Sequences/Intrinsic Metafunctions//insert_range -->
210</div>
211</div>
212
213<div class="footer-separator"></div>
214<table class="footer"><tr class="footer"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./has-key.html" class="navigation-link">Prev</a>&nbsp;<a href="./insert-range.html" class="navigation-link">Next</a></span><span class="navigation-group-separator">&nbsp;|&nbsp;</span><span class="navigation-group"><a href="./has-key.html" class="navigation-link">Back</a>&nbsp;<a href="./insert-range.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>
215<td><div class="copyright-footer"><div class="copyright">Copyright © 2001-2009 Aleksey Gurtovoy and David Abrahams</div>
216Distributed under the Boost Software License, Version 1.0. (See accompanying
217file 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>
218</html>