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< title > The MPL Reference Manual: reverse_transform</ title >
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< table class = "header" >< tr class = "header" >< td class = "header-group navigation-bar" >< span class = "navigation-group" >< a href = "./reverse-copy-if.html" class = "navigation-link" > Prev</ a > < a href = "./reverse-replace.html" class = "navigation-link" > Next</ a ></ span >< span class = "navigation-group-separator" > | </ span >< span class = "navigation-group" >< a href = "./reverse-copy-if.html" class = "navigation-link" > Back</ a > < a href = "./reverse-replace.html" class = "navigation-link" > Along</ a ></ span >< span class = "navigation-group-separator" > | </ span >< span class = "navigation-group" >< a href = "./transformation-algorithms.html" class = "navigation-link" > Up</ a > < a href = "../refmanual.html" class = "navigation-link" > Home</ a ></ span >< span class = "navigation-group-separator" > | </ span >< span class = "navigation-group" >< a href = "./refmanual_toc.html" class = "navigation-link" > Full TOC</ a ></ span ></ td >
< 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-transform.html" class = "navigation-link" > reverse_transform</ a ></ td >
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< div class = "section" id = "reverse-transform" >
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< h1 >< a class = "toc-backref" href = "./transformation-algorithms.html#id1500" > reverse_transform</ a ></ h1 >
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< div class = "section" id = "id740" >
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< h3 >< a class = "subsection-title" href = "#synopsis" name = "synopsis" > Synopsis</ a ></ h3 >
< pre class = "literal-block" >
template<
typename Seq
, typename Op
, typename In = < em > unspecified</ em >
>
struct < a href = "./reverse-transform.html" class = "identifier" > reverse_transform</ a >
{
typedef < em > unspecified</ em > type;
};
template<
typename Seq1
, typename Seq2
, typename BinaryOp
, typename In = < em > unspecified</ em >
>
struct < a href = "./reverse-transform.html" class = "identifier" > reverse_transform</ a >
{
typedef < em > unspecified</ em > type;
};
</ pre >
</ div >
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< div class = "section" id = "id741" >
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< h3 >< a class = "subsection-title" href = "#description" name = "description" > Description</ a ></ h3 >
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< p >< tt class = "literal" >< span class = "pre" >< a href = "./reverse-transform.html" class = "identifier" > reverse_transform</ a ></ span ></ tt > is an < a class = "reference internal" href = "./terminology.html#overloaded-name" > overloaded name</ a > :</ p >
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< ul class = "simple" >
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< li >< tt class = "literal" >< span class = "pre" >< a href = "./reverse-transform.html" class = "identifier" > reverse_transform</ a > < Seq,Op> </ span ></ tt > returns a reversed, transformed copy of the
original sequence produced by applying an unary transformation < tt class = "literal" >< span class = "pre" > Op</ span ></ tt > to
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every element in the [< tt class = "literal" >< span class = "pre" >< a href = "./begin.html" class = "identifier" > begin</ a > < Sequence> ::type</ span ></ tt > , < tt class = "literal" >< span class = "pre" >< a href = "./end.html" class = "identifier" > end</ a > < Sequence> ::type</ span ></ tt > ) range.</ li >
< li >< tt class = "literal" >< span class = "pre" >< a href = "./reverse-transform.html" class = "identifier" > reverse_transform</ a > < Seq1,Seq2,Op> </ span ></ tt > returns a new sequence produced by applying a
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binary transformation < tt class = "literal" >< span class = "pre" > BinaryOp</ span ></ tt > to a pair of elements (e< sub > 1</ sub > , e2< sub > 1</ sub > )
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from the corresponding [< tt class = "literal" >< span class = "pre" >< a href = "./begin.html" class = "identifier" > begin</ a > < Seq1> ::type</ span ></ tt > , < tt class = "literal" >< span class = "pre" >< a href = "./end.html" class = "identifier" > end</ a > < Seq1> ::type</ span ></ tt > ) and [< tt class = "literal" >< span class = "pre" >< a href = "./begin.html" class = "identifier" > begin</ a > < Seq2> ::type</ span ></ tt > , < tt class = "literal" >< span class = "pre" >< a href = "./end.html" class = "identifier" > end</ a > < Seq2> ::type</ span ></ tt > ) ranges in reverse
order.</ li >
</ ul >
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< p > [< em > Note:</ em > This wording applies to a no-inserter version(s) of the algorithm. See the
< cite > Expression semantics</ cite > subsection for a precise specification of the algorithm's
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details in all cases — < em > end note</ em > ]</ p >
</ div >
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< div class = "section" id = "id742" >
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< h3 >< a class = "subsection-title" href = "#header" name = "header" > Header</ a ></ h3 >
< pre class = "literal-block" >
#include < < a href = "../../../../boost/mpl/transform.hpp" class = "header" > boost/mpl/transform.hpp</ a > >
</ pre >
</ div >
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< div class = "section" id = "id743" >
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< h3 >< a class = "subsection-title" href = "#model-of" name = "model-of" > Model of</ a ></ h3 >
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< p >< a class = "reference internal" href = "./reversible-algorithm.html" > Reversible Algorithm</ a ></ p >
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</ div >
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< div class = "section" id = "id744" >
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< h3 >< a class = "subsection-title" href = "#parameters" name = "parameters" > Parameters</ a ></ h3 >
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< table border = "1" class = "docutils table" >
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< colgroup >
< col width = "21%" />
< col width = "39%" />
< col width = "39%" />
</ colgroup >
< thead valign = "bottom" >
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< tr >< th class = "head" > Parameter</ th >
< th class = "head" > Requirement</ th >
< th class = "head" > Description</ th >
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</ tr >
</ thead >
< tbody valign = "top" >
< tr >< td >< tt class = "literal" >< span class = "pre" > Sequence</ span ></ tt > ,
< tt class = "literal" >< span class = "pre" > Seq1</ span ></ tt > , < tt class = "literal" >< span class = "pre" > Seq2</ span ></ tt ></ td >
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< td >< a class = "reference internal" href = "./forward-sequence.html" > Forward Sequence</ a ></ td >
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< td > Sequences to transform.</ td >
</ tr >
< tr >< td >< tt class = "literal" >< span class = "pre" > Op</ span ></ tt > ,
< tt class = "literal" >< span class = "pre" > BinaryOp</ span ></ tt ></ td >
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< td >< a class = "reference internal" href = "./lambda-expression.html" > Lambda Expression</ a ></ td >
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< td > A transformation.</ td >
</ tr >
< tr >< td >< tt class = "literal" >< span class = "pre" > In</ span ></ tt ></ td >
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< td >< a class = "reference internal" href = "./inserter.html" > Inserter</ a ></ td >
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< td > An inserter.</ td >
</ tr >
</ tbody >
</ table >
</ div >
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< div class = "section" id = "id745" >
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< h3 >< a class = "subsection-title" href = "#expression-semantics" name = "expression-semantics" > Expression semantics</ a ></ h3 >
< p > The semantics of an expression are defined only
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where they differ from, or are not defined in < a class = "reference internal" href = "./reversible-algorithm.html" > Reversible Algorithm</ a > .</ p >
< p > For any < a class = "reference internal" href = "./forward-sequence.html" > Forward Sequence</ a > s < tt class = "literal" >< span class = "pre" > s</ span ></ tt > , < tt class = "literal" >< span class = "pre" > s1</ span ></ tt > and < tt class = "literal" >< span class = "pre" > s2</ span ></ tt > , < a class = "reference internal" href = "./lambda-expression.html" > Lambda Expression</ a > s < tt class = "literal" >< span class = "pre" > op</ span ></ tt > and < tt class = "literal" >< span class = "pre" > op2</ span ></ tt > ,
and an < a class = "reference internal" href = "./inserter.html" > Inserter</ a > < tt class = "literal" >< span class = "pre" > in</ span ></ tt > :</ p >
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< pre class = "literal-block" >
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typedef < a href = "./reverse-transform.html" class = "identifier" > reverse_transform</ a > < s,op,in> ::type r;
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</ pre >
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< table class = "docutils field-list" frame = "void" rules = "none" >
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< col class = "field-name" />
< col class = "field-body" />
< tbody valign = "top" >
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< tr class = "field" >< th class = "field-name" > Return type:</ th >< td class = "field-body" >< p class = "first" > A type.</ p >
</ td >
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</ tr >
< tr class = "field" >< th class = "field-name" > Postcondition:</ th >< td class = "field-body" >< p class = "first" > Equivalent to</ p >
< pre class = "last literal-block" >
typedef < a href = "./lambda.html" class = "identifier" > lambda</ a > < op> ::type f;
typedef < a href = "./lambda.html" class = "identifier" > lambda</ a > < in::operation> ::type in_op;
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typedef < a href = "./reverse-fold.html" class = "identifier" > reverse_fold</ a > <
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s
, in::state
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, < a href = "./bind.html" class = "identifier" > bind</ a > < in_op, < a href = "./placeholders.html" class = "identifier" > _1</ a > , < a href = "./bind.html" class = "identifier" > bind</ a > < f, < a href = "./placeholders.html" class = "identifier" > _2</ a > > >
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> ::type r;
</ pre >
</ td >
</ tr >
</ tbody >
</ table >
< pre class = "literal-block" >
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typedef < a href = "./transform.html" class = "identifier" > transform</ a > < s1,s2,op,in> ::type r;
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</ pre >
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< table class = "docutils field-list" frame = "void" rules = "none" >
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< col class = "field-name" />
< col class = "field-body" />
< tbody valign = "top" >
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< tr class = "field" >< th class = "field-name" > Return type:</ th >< td class = "field-body" >< p class = "first" > A type.</ p >
</ td >
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</ tr >
< tr class = "field" >< th class = "field-name" > Postcondition:</ th >< td class = "field-body" >< p class = "first" > Equivalent to</ p >
< pre class = "last literal-block" >
typedef < a href = "./lambda.html" class = "identifier" > lambda</ a > < op2> ::type f;
typedef < a href = "./lambda.html" class = "identifier" > lambda</ a > < in::operation> ::type in_op;
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typedef < a href = "./reverse-fold.html" class = "identifier" > reverse_fold</ a > <
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pair_view< s1,s2>
, in::state
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, < a href = "./bind.html" class = "identifier" > bind</ a > <
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in_op
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, < a href = "./placeholders.html" class = "identifier" > _1</ a >
, < a href = "./bind.html" class = "identifier" > bind</ a > < f, < a href = "./bind.html" class = "identifier" > bind</ a > < first<> ,< a href = "./placeholders.html" class = "identifier" > _2</ a > > , < a href = "./bind.html" class = "identifier" > bind</ a > < second<> ,< a href = "./placeholders.html" class = "identifier" > _2</ a > > >
>
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> ::type r;
</ pre >
</ td >
</ tr >
</ tbody >
</ table >
</ div >
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< div class = "section" id = "id746" >
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< h3 >< a class = "subsection-title" href = "#complexity" name = "complexity" > Complexity</ a ></ h3 >
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< p > Linear. Exactly < tt class = "literal" >< span class = "pre" >< a href = "./size.html" class = "identifier" > size</ a > < s> ::value</ span ></ tt > / < tt class = "literal" >< span class = "pre" >< a href = "./size.html" class = "identifier" > size</ a > < s1> ::value</ span ></ tt > applications of
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< tt class = "literal" >< span class = "pre" > op</ span ></ tt > / < tt class = "literal" >< span class = "pre" > op2</ span ></ tt > and < tt class = "literal" >< span class = "pre" > in::operation</ span ></ tt > .</ p >
</ div >
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< div class = "section" id = "id747" >
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< h3 >< a class = "subsection-title" href = "#example" name = "example" > Example</ a ></ h3 >
< pre class = "literal-block" >
typedef < a href = "./vector.html" class = "identifier" > vector</ a > < char,short,int,long,float,double> types;
typedef < a href = "./vector.html" class = "identifier" > vector</ a > < double*,float*,long*,int*,short*,char*> pointers;
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typedef < a href = "./reverse-transform.html" class = "identifier" > reverse_transform</ a > < types,boost::add_pointer< < a href = "./placeholders.html" class = "identifier" > _1</ a > > > ::type result;
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< a href = "./assert.html" class = "identifier" > BOOST_MPL_ASSERT</ a > (( < a href = "./equal.html" class = "identifier" > equal</ a > < result,pointers> ));
</ pre >
</ div >
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< div class = "section" id = "id748" >
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< h3 >< a class = "subsection-title" href = "#see-also" name = "see-also" > See also</ a ></ h3 >
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< 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 = "./transform.html" > transform</ a > , < a class = "reference internal" href = "./reverse-copy.html" > reverse_copy</ a > , < a class = "reference internal" href = "./replace-if.html" > replace_if</ a ></ p >
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<!-- Algorithms/Transformation Algorithms//reverse_replace |140 -->
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< td >< div class = "copyright-footer" >< div class = "copyright" > Copyright © 2001-2009 Aleksey Gurtovoy and David Abrahams</ div >
Distributed under the Boost Software License, Version 1.0. (See accompanying
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