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14 <div class=
"section" id=
"reverse-copy-if">
15 <h1><a class=
"toc-backref" href=
"./transformation-algorithms.html#id1499">reverse_copy_if
</a></h1>
16 <div class=
"section" id=
"id731">
17 <h3><a class=
"subsection-title" href=
"#synopsis" name=
"synopsis">Synopsis
</a></h3>
18 <pre class=
"literal-block">
22 , typename In =
<em>unspecified
</em>
24 struct
<a href=
"./reverse-copy-if.html" class=
"identifier">reverse_copy_if
</a>
26 typedef
<em>unspecified
</em> type;
30 <div class=
"section" id=
"id732">
31 <h3><a class=
"subsection-title" href=
"#description" name=
"description">Description
</a></h3>
32 <p>Returns a reversed, filtered copy of the original sequence containing the
33 elements that satisfy the predicate
<tt class=
"literal"><span class=
"pre">Pred
</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
36 details in all cases —
<em>end note
</em>]
</p>
38 <div class=
"section" id=
"id733">
39 <h3><a class=
"subsection-title" href=
"#header" name=
"header">Header
</a></h3>
40 <pre class=
"literal-block">
41 #include
<<a href=
"../../../../boost/mpl/copy_if.hpp" class=
"header">boost/mpl/copy_if.hpp
</a>>
44 <div class=
"section" id=
"id734">
45 <h3><a class=
"subsection-title" href=
"#model-of" name=
"model-of">Model of
</a></h3>
46 <p><a class=
"reference internal" href=
"./reversible-algorithm.html">Reversible Algorithm
</a></p>
48 <div class=
"section" id=
"id735">
49 <h3><a class=
"subsection-title" href=
"#parameters" name=
"parameters">Parameters
</a></h3>
50 <table border=
"1" class=
"docutils table">
56 <thead valign=
"bottom">
57 <tr><th class=
"head">Parameter
</th>
58 <th class=
"head">Requirement
</th>
59 <th class=
"head">Description
</th>
63 <tr><td><tt class=
"literal"><span class=
"pre">Sequence
</span></tt></td>
64 <td><a class=
"reference internal" href=
"./forward-sequence.html">Forward Sequence
</a></td>
65 <td>A sequence to copy.
</td>
67 <tr><td><tt class=
"literal"><span class=
"pre">Pred
</span></tt></td>
68 <td>Unary
<a class=
"reference internal" href=
"./lambda-expression.html">Lambda Expression
</a></td>
69 <td>A copying condition.
</td>
71 <tr><td><tt class=
"literal"><span class=
"pre">In
</span></tt></td>
72 <td><a class=
"reference internal" href=
"./inserter.html">Inserter
</a></td>
78 <div class=
"section" id=
"id736">
79 <h3><a class=
"subsection-title" href=
"#expression-semantics" name=
"expression-semantics">Expression semantics
</a></h3>
80 <p>The semantics of an expression are defined only
81 where they differ from, or are not defined in
<a class=
"reference internal" href=
"./reversible-algorithm.html">Reversible Algorithm
</a>.
</p>
82 <p>For any
<a class=
"reference internal" href=
"./forward-sequence.html">Forward Sequence
</a> <tt class=
"literal"><span class=
"pre">s
</span></tt>, an unary
<a class=
"reference internal" href=
"./lambda-expression.html">Lambda Expression
</a> <tt class=
"literal"><span class=
"pre">pred
</span></tt>, and
83 an
<a class=
"reference internal" href=
"./inserter.html">Inserter
</a> <tt class=
"literal"><span class=
"pre">in
</span></tt>:
</p>
84 <pre class=
"literal-block">
85 typedef
<a href=
"./reverse-copy-if.html" class=
"identifier">reverse_copy_if
</a><s,pred,in
>::type r;
87 <table class=
"docutils field-list" frame=
"void" rules=
"none">
88 <col class=
"field-name" />
89 <col class=
"field-body" />
91 <tr class=
"field"><th class=
"field-name">Return type:
</th><td class=
"field-body"><p class=
"first">A type
</p>
94 <tr class=
"field"><th class=
"field-name">Semantics:
</th><td class=
"field-body"><p class=
"first">Equivalent to
</p>
95 <pre class=
"last literal-block">
96 typedef
<a href=
"./lambda.html" class=
"identifier">lambda
</a><pred
>::type p;
97 typedef
<a href=
"./lambda.html" class=
"identifier">lambda
</a><in::operation
>::type op;
99 typedef
<a href=
"./reverse-fold.html" class=
"identifier">reverse_fold
</a><
102 ,
<a href=
"./eval-if.html" class=
"identifier">eval_if
</a><
103 <a href=
"./apply-wrap.html" class=
"identifier">apply_wrap
</a><tt class=
"literal"><span class=
"pre">1</span></tt><p,
<a href=
"./placeholders.html" class=
"identifier">_2
</a>>
104 ,
<a href=
"./apply-wrap.html" class=
"identifier">apply_wrap
</a><tt class=
"literal"><span class=
"pre">2</span></tt><op,
<a href=
"./placeholders.html" class=
"identifier">_1
</a>,
<a href=
"./placeholders.html" class=
"identifier">_2
</a>>
105 ,
<a href=
"./identity.html" class=
"identifier">identity
</a><<a href=
"./placeholders.html" class=
"identifier">_1
</a>>
114 <div class=
"section" id=
"id737">
115 <h3><a class=
"subsection-title" href=
"#complexity" name=
"complexity">Complexity
</a></h3>
116 <p>Linear. Exactly
<tt class=
"literal"><span class=
"pre"><a href=
"./size.html" class=
"identifier">size
</a><s
>::value
</span></tt> applications of
<tt class=
"literal"><span class=
"pre">pred
</span></tt>, and at
117 most
<tt class=
"literal"><span class=
"pre"><a href=
"./size.html" class=
"identifier">size
</a><s
>::value
</span></tt> applications of
<tt class=
"literal"><span class=
"pre">in::operation
</span></tt>.
</p>
119 <div class=
"section" id=
"id738">
120 <h3><a class=
"subsection-title" href=
"#example" name=
"example">Example
</a></h3>
121 <pre class=
"literal-block">
122 typedef
<a href=
"./reverse-copy-if.html" class=
"identifier">reverse_copy_if
</a><
123 <a href=
"./range-c.html" class=
"identifier">range_c
</a><int,
0,
10>
124 ,
<a href=
"./less.html" class=
"identifier">less
</a>< <a href=
"./placeholders.html" class=
"identifier">_1
</a>,
<a href=
"./int.html" class=
"identifier">int_
</a><5> >
125 ,
<a href=
"./front-inserter.html" class=
"identifier">front_inserter
</a>< <a href=
"./vector.html" class=
"identifier">vector
</a><> >
128 <a href=
"./assert-relation.html" class=
"identifier">BOOST_MPL_ASSERT_RELATION
</a>(
<a href=
"./size.html" class=
"identifier">size
</a><result
>::value, ==,
5 );
129 <a href=
"./assert.html" class=
"identifier">BOOST_MPL_ASSERT
</a>((
<a href=
"./equal.html" class=
"identifier">equal
</a><result,
<a href=
"./range-c.html" class=
"identifier">range_c
</a><int,
0,
5> > ));
132 <div class=
"section" id=
"id739">
133 <h3><a class=
"subsection-title" href=
"#see-also" name=
"see-also">See also
</a></h3>
134 <p><a class=
"reference internal" href=
"./transformation-algorithms.html">Transformation Algorithms
</a>,
<a class=
"reference internal" href=
"./reversible-algorithm.html">Reversible Algorithm
</a>,
<a class=
"reference internal" href=
"./copy-if.html">copy_if
</a>,
<a class=
"reference internal" href=
"./reverse-copy.html">reverse_copy
</a>,
<a class=
"reference internal" href=
"./remove-if.html">remove_if
</a>,
<a class=
"reference internal" href=
"./replace-if.html">replace_if
</a></p>
135 <!-- Algorithms/Transformation Algorithms//reverse_transform |130 -->
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141 <td><div class=
"copyright-footer"><div class=
"copyright">Copyright ©
2001-
2009 Aleksey Gurtovoy and David Abrahams
</div>
142 Distributed under the Boost Software License, Version
1.0. (See accompanying
143 file LICENSE_1_0.txt or copy at
<a class=
"reference external" href=
"http://www.boost.org/LICENSE_1_0.txt" target=
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