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11<table class="header"><tr class="header"><td class="header-group navigation-bar"><span class="navigation-group"><a href="./reverse-replace.html" class="navigation-link">Prev</a>&nbsp;<a href="./reverse-remove.html" class="navigation-link">Next</a></span><span class="navigation-group-separator">&nbsp;|&nbsp;</span><span class="navigation-group"><a href="./reverse-replace.html" class="navigation-link">Back</a>&nbsp;<a href="./reverse-remove.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="./reverse-replace-if.html" class="navigation-link">reverse_replace_if</a></td>
13</tr></table><div class="header-separator"></div>
14<div class="section" id="reverse-replace-if">
15<h1><a class="toc-backref" href="./transformation-algorithms.html#id430" name="reverse-replace-if">reverse_replace_if</a></h1>
16<div class="section" id="id140">
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 Pred
22    , typename In = <em>unspecified</em>
23    &gt;
24struct <a href="./reverse-replace-if.html" class="identifier">reverse_replace_if</a>
25{
26    typedef <em>unspecified</em> type;
27};
28</pre>
29</div>
30<div class="section" id="id141">
31<h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
32<p>Returns a reversed copy of the original sequence where every type that satisfies
33the predicate <tt class="literal"><span class="pre">Pred</span></tt> has been replaced with <tt class="literal"><span class="pre">NewType</span></tt>.</p>
34<p>[<em>Note:</em> This wording applies to a no-inserter version(s) of the algorithm. See the
35<cite>Expression semantics</cite> subsection for a precise specification of the algorithm's
36details in all cases — <em>end note</em>]</p>
37</div>
38<div class="section" id="id142">
39<h3><a class="subsection-title" href="#header" name="header">Header</a></h3>
40<pre class="literal-block">
41#include &lt;<a href="../../../../boost/mpl/replace_if.hpp" class="header">boost/mpl/replace_if.hpp</a>&gt;
42</pre>
43</div>
44<div class="section" id="id143">
45<h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3>
46<p><a class="reference" href="./reversible-algorithm.html">Reversible Algorithm</a></p>
47</div>
48<div class="section" id="id144">
49<h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3>
50<table border="1" class="table">
51<colgroup>
52<col width="19%" />
53<col width="43%" />
54<col width="38%" />
55</colgroup>
56<thead valign="bottom">
57<tr><th>Parameter</th>
58<th>Requirement</th>
59<th>Description</th>
60</tr>
61</thead>
62<tbody valign="top">
63<tr><td><tt class="literal"><span class="pre">Sequence</span></tt></td>
64<td><a class="reference" href="./forward-sequence.html">Forward Sequence</a></td>
65<td>An original sequence.</td>
66</tr>
67<tr><td><tt class="literal"><span class="pre">Pred</span></tt></td>
68<td>Unary <a class="reference" href="./lambda-expression.html">Lambda Expression</a></td>
69<td>A replacement condition.</td>
70</tr>
71<tr><td><tt class="literal"><span class="pre">NewType</span></tt></td>
72<td>Any type</td>
73<td>A type to replace with.</td>
74</tr>
75<tr><td><tt class="literal"><span class="pre">In</span></tt></td>
76<td><a class="reference" href="./inserter.html">Inserter</a></td>
77<td>An inserter.</td>
78</tr>
79</tbody>
80</table>
81</div>
82<div class="section" id="id145">
83<h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3>
84<p>The semantics of an expression are defined only
85where they differ from, or are not defined in <a class="reference" href="./reversible-algorithm.html">Reversible Algorithm</a>.</p>
86<p>For any <a class="reference" href="./forward-sequence.html">Forward Sequence</a> <tt class="literal"><span class="pre">s</span></tt>, an unary <a class="reference" href="./lambda-expression.html">Lambda Expression</a> <tt class="literal"><span class="pre">pred</span></tt>,
87an <a class="reference" href="./inserter.html">Inserter</a> <tt class="literal"><span class="pre">in</span></tt>, and arbitrary type <tt class="literal"><span class="pre">x</span></tt>:</p>
88<pre class="literal-block">
89typedef <a href="./reverse-replace-if.html" class="identifier">reverse_replace_if</a>&lt;s,pred,x,in&gt;::type r;
90</pre>
91<table class="field-list" frame="void" rules="none">
92<col class="field-name" />
93<col class="field-body" />
94<tbody valign="top">
95<tr class="field"><th class="field-name">Return type:</th><td class="field-body">A type.</td>
96</tr>
97<tr class="field"><th class="field-name">Semantics:</th><td class="field-body"><p class="first">Equivalent to</p>
98<pre class="last literal-block">
99typedef <a href="./lambda.html" class="identifier">lambda</a>&lt;pred&gt;::type p;
100typedef <a href="./reverse-transform.html" class="identifier">reverse_transform</a>&lt; s, <a href="./if.html" class="identifier">if_</a>&lt; apply_wrap1&lt;p,_1&gt;,x,_1&gt;, in &gt;::type r;
101</pre>
102</td>
103</tr>
104</tbody>
105</table>
106</div>
107<div class="section" id="id146">
108<h3><a class="subsection-title" href="#complexity" name="complexity">Complexity</a></h3>
109<p>Linear. Performs 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">pred</span></tt>, and at most
110<tt class="literal"><span class="pre"><a href="./size.html" class="identifier">size</a>&lt;s&gt;::value</span></tt> insertions.</p>
111</div>
112<div class="section" id="id147">
113<h3><a class="subsection-title" href="#example" name="example">Example</a></h3>
114<pre class="literal-block">
115typedef <a href="./vector-c.html" class="identifier">vector_c</a>&lt;int,1,4,5,2,7,5,3,5&gt; numbers;
116typedef <a href="./vector-c.html" class="identifier">vector_c</a>&lt;int,1,4,0,2,0,0,3,0&gt; expected;
117typedef <a href="./reverse-replace-if.html" class="identifier">reverse_replace_if</a>&lt; 
118      numbers
119    , <a href="./greater.html" class="identifier">greater</a>&lt; _, <a href="./int.html" class="identifier">int_</a>&lt;4&gt; &gt;
120    , <a href="./int.html" class="identifier">int_</a>&lt;0&gt;
121    , <a href="./front-inserter.html" class="identifier">front_inserter</a>&lt; <a href="./vector.html" class="identifier">vector</a>&lt;&gt; &gt;
122    &gt;::type result;
123
124<a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( <a href="./equal.html" class="identifier">equal</a>&lt; result,expected, <a href="./equal-to.html" class="identifier">equal_to</a>&lt;_,_&gt; > ));
125</pre>
126</div>
127<div class="section" id="id148">
128<h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3>
129<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="./replace-if.html"><tt class="refentry literal"><span class="pre">replace_if</span></tt></a>, <a class="refentry reference" href="./reverse-replace.html"><tt class="refentry literal"><span class="pre">reverse_replace</span></tt></a>, <a class="refentry reference" href="./remove-if.html"><tt class="refentry literal"><span class="pre">remove_if</span></tt></a>, <a class="refentry reference" href="./transform.html"><tt class="refentry literal"><span class="pre">transform</span></tt></a></p>
130<!-- modtime: November 10, 2004 04:32:28 +0000 -->
131<!-- Algorithms/Transformation Algorithms//reverse_remove |160 -->
132</div>
133</div>
134
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