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2007-11-07 16:22:38 +00:00
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< div class = "titlepage" >< div >< div >< h4 class = "title" >
< a name = "fusion.sequence.concepts.bidirectional_sequence" ></ a >< a href = "bidirectional_sequence.html" title = "Bidirectional
Sequence" > Bidirectional
Sequence</ a ></ h4 ></ div ></ div ></ div >
< a name = "fusion.sequence.concepts.bidirectional_sequence.description" ></ a >< h5 >
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< a name = "id493098" ></ a >
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< a href = "bidirectional_sequence.html#fusion.sequence.concepts.bidirectional_sequence.description" > Description</ a >
</ h5 >
< p >
A Bidirectional Sequence is a < a href = "forward_sequence.html" title = "Forward
Sequence" > Forward
Sequence</ a > whose iterators model < a href = "../../iterator/concepts/bidirectional_iterator.html" title = "Bidirectional
Iterator" > Bidirectional
Iterator</ a > .
</ p >
< a name = "fusion.sequence.concepts.bidirectional_sequence.refinement_of" ></ a >< h5 >
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< a name = "id493148" ></ a >
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< a href = "bidirectional_sequence.html#fusion.sequence.concepts.bidirectional_sequence.refinement_of" > Refinement
of</ a >
</ h5 >
< p >
< a href = "forward_sequence.html" title = "Forward
Sequence" > Forward Sequence</ a >
</ p >
< div class = "variablelist" >
< p class = "title" >< b > Notation</ b ></ p >
< dl >
< dt >< span class = "term" >< tt class = "computeroutput" >< span class = "identifier" > s</ span ></ tt ></ span ></ dt >
< dd >< p >
A Forward Sequence
</ p ></ dd >
< dt >< span class = "term" >< tt class = "computeroutput" >< span class = "identifier" > S</ span ></ tt ></ span ></ dt >
< dd >< p >
A Forward Sequence type
</ p ></ dd >
< dt >< span class = "term" >< tt class = "computeroutput" >< span class = "identifier" > o</ span ></ tt ></ span ></ dt >
< dd >< p >
An arbitrary object
</ p ></ dd >
< dt >< span class = "term" >< tt class = "computeroutput" >< span class = "identifier" > e</ span ></ tt ></ span ></ dt >
< dd >< p >
A Sequence element
</ p ></ dd >
</ dl >
</ div >
< a name = "fusion.sequence.concepts.bidirectional_sequence.valid_expressions" ></ a >< h5 >
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< a name = "id493289" ></ a >
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< a href = "bidirectional_sequence.html#fusion.sequence.concepts.bidirectional_sequence.valid_expressions" > Valid
Expressions</ a >
</ h5 >
< p >
In addition to the requirements defined in < a href = "forward_sequence.html" title = "Forward
Sequence" > Forward
Sequence</ a > , for any Bidirectional Sequence the following must be met:
</ p >
< div class = "informaltable" >< table class = "table" >
< colgroup >
< col >
< col >
< col >
< col >
</ colgroup >
< thead >< tr >
< th >
< p >
Expression
</ p >
</ th >
< th >
< p >
Return type
</ p >
</ th >
< th >
< p >
Type Requirements
</ p >
</ th >
< th >
< p >
Runtime Complexity
</ p >
</ th >
</ tr ></ thead >
< tbody >
< tr >
< td >
< p >
< tt class = "computeroutput" >< a href = "../intrinsic/functions/begin.html" title = "begin" >< tt class = "computeroutput" >< span class = "identifier" > begin</ span ></ tt ></ a >< span class = "special" > (</ span >< span class = "identifier" > s</ span >< span class = "special" > )</ span ></ tt >
</ p >
</ td >
< td >
< p >
< a href = "../../iterator/concepts/bidirectional_iterator.html" title = "Bidirectional
Iterator" > Bidirectional
Iterator</ a >
</ p >
</ td >
< td >
< p >
</ p >
</ td >
< td >
< p >
Constant
</ p >
</ td >
</ tr >
< tr >
< td >
< p >
< tt class = "computeroutput" >< a href = "../intrinsic/functions/end.html" title = "end" >< tt class = "computeroutput" >< span class = "identifier" > end</ span ></ tt ></ a >< span class = "special" > (</ span >< span class = "identifier" > s</ span >< span class = "special" > )</ span ></ tt >
</ p >
</ td >
< td >
< p >
< a href = "../../iterator/concepts/bidirectional_iterator.html" title = "Bidirectional
Iterator" > Bidirectional
Iterator</ a >
</ p >
</ td >
< td >
< p >
</ p >
</ td >
< td >
< p >
Constant
</ p >
</ td >
</ tr >
< tr >
< td >
< p >
< tt class = "computeroutput" >< a href = "../intrinsic/functions/back.html" title = "back" >< tt class = "computeroutput" >< span class = "identifier" > back</ span ></ tt ></ a >< span class = "special" > (</ span >< span class = "identifier" > s</ span >< span class = "special" > )</ span ></ tt >
</ p >
</ td >
< td >
< p >
Any type
</ p >
</ td >
< td >
< p >
</ p >
</ td >
< td >
< p >
Constant
</ p >
</ td >
</ tr >
< tr >
< td >
< p >
< tt class = "computeroutput" >< a href = "../intrinsic/functions/back.html" title = "back" >< tt class = "computeroutput" >< span class = "identifier" > back</ span ></ tt ></ a >< span class = "special" > (</ span >< span class = "identifier" > s</ span >< span class = "special" > )</ span >
< span class = "special" > =</ span > < span class = "identifier" > o</ span ></ tt >
</ p >
</ td >
< td >
< p >
Any type
</ p >
</ td >
< td >
< p >
< tt class = "computeroutput" >< span class = "identifier" > s</ span ></ tt > is mutable and
< tt class = "computeroutput" >< span class = "identifier" > e</ span > < span class = "special" > =</ span >
< span class = "identifier" > o</ span ></ tt > , where < tt class = "computeroutput" >< span class = "identifier" > e</ span ></ tt > is the first element in the
sequence, is a valid expression.
</ p >
</ td >
< td >
< p >
Constant
</ p >
</ td >
</ tr >
</ tbody >
</ table ></ div >
< a name = "fusion.sequence.concepts.bidirectional_sequence.result_type_expressions" ></ a >< h5 >
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< a name = "id493728" ></ a >
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< a href = "bidirectional_sequence.html#fusion.sequence.concepts.bidirectional_sequence.result_type_expressions" > Result
Type Expressions</ a >
</ h5 >
< div class = "informaltable" >< table class = "table" >
< colgroup >
< col >
< col >
</ colgroup >
< thead >< tr >
< th >
< p >
Expression
</ p >
</ th >
< th >
< p >
Compile Time Complexity
</ p >
</ th >
</ tr ></ thead >
< tbody >
< tr >
< td >
< p >
< tt class = "computeroutput" >< a href = "../intrinsic/metafunctions/begin.html" title = "begin" >< tt class = "computeroutput" >< span class = "identifier" > result_of</ span >< span class = "special" > ::</ span >< span class = "identifier" > begin</ span ></ tt ></ a >< span class = "special" > < </ span >< span class = "identifier" > S</ span >< span class = "special" > > ::</ span >< span class = "identifier" > type</ span ></ tt >
</ p >
</ td >
< td >
< p >
Amortized constant time
</ p >
</ td >
</ tr >
< tr >
< td >
< p >
< tt class = "computeroutput" >< a href = "../intrinsic/metafunctions/end.html" title = "end" >< tt class = "computeroutput" >< span class = "identifier" > result_of</ span >< span class = "special" > ::</ span >< span class = "identifier" > end</ span ></ tt ></ a >< span class = "special" > < </ span >< span class = "identifier" > S</ span >< span class = "special" > > ::</ span >< span class = "identifier" > type</ span ></ tt >
</ p >
</ td >
< td >
< p >
Amortized constant time
</ p >
</ td >
</ tr >
< tr >
< td >
< p >
< tt class = "computeroutput" >< a href = "../intrinsic/metafunctions/back.html" title = "back" >< tt class = "computeroutput" >< span class = "identifier" > result_of</ span >< span class = "special" > ::</ span >< span class = "identifier" > back</ span ></ tt ></ a >< span class = "special" > < </ span >< span class = "identifier" > S</ span >< span class = "special" > > ::</ span >< span class = "identifier" > type</ span ></ tt >
</ p >
</ td >
< td >
< p >
Amortized constant time
</ p >
</ td >
</ tr >
</ tbody >
</ table ></ div >
< a name = "fusion.sequence.concepts.bidirectional_sequence.expression_semantics" ></ a >< h5 >
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< a name = "id494005" ></ a >
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< a href = "bidirectional_sequence.html#fusion.sequence.concepts.bidirectional_sequence.expression_semantics" > Expression
Semantics</ a >
</ h5 >
< p >
The semantics of an expression are defined only where they differ from,
or are not defined in < a href = "forward_sequence.html" title = "Forward
Sequence" > Forward
Sequence</ a > .
</ p >
< div class = "informaltable" >< table class = "table" >
< colgroup >
< col >
< col >
</ colgroup >
< thead >< tr >
< th >
< p >
Expression
</ p >
</ th >
< th >
< p >
Semantics
</ p >
</ th >
</ tr ></ thead >
< tbody >< tr >
< td >
< p >
< tt class = "computeroutput" >< a href = "../intrinsic/functions/back.html" title = "back" >< tt class = "computeroutput" >< span class = "identifier" > back</ span ></ tt ></ a >< span class = "special" > (</ span >< span class = "identifier" > s</ span >< span class = "special" > )</ span ></ tt >
</ p >
</ td >
< td >
< p >
The last element in the sequence; see < a href = "../intrinsic/functions/back.html" title = "back" >< tt class = "computeroutput" >< span class = "identifier" > back</ span ></ tt ></ a > .
</ p >
</ td >
</ tr ></ tbody >
</ table ></ div >
< a name = "fusion.sequence.concepts.bidirectional_sequence.models" ></ a >< h5 >
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< a name = "id494158" ></ a >
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< a href = "bidirectional_sequence.html#fusion.sequence.concepts.bidirectional_sequence.models" > Models</ a >
</ h5 >
< div class = "itemizedlist" >< ul type = "disc" >
< li >< a href = "../../adapted/std__pair.html" title = "std::pair" >< tt class = "computeroutput" >< span class = "identifier" > std</ span >< span class = "special" > ::</ span >< span class = "identifier" > pair</ span ></ tt ></ a ></ li >
< li >< a href = "../../adapted/boost__array.html" title = "boost::array" >< tt class = "computeroutput" >< span class = "identifier" > boost</ span >< span class = "special" > ::</ span >< span class = "identifier" > array</ span ></ tt ></ a ></ li >
< li >< a href = "../../container/vector.html" title = "vector" >< tt class = "computeroutput" >< span class = "identifier" > vector</ span ></ tt ></ a ></ li >
< li >< a href = "../../view/reverse_view.html" title = "reverse_view" >< tt class = "computeroutput" >< span class = "identifier" > reverse_view</ span ></ tt ></ a ></ li >
< li >
< a href = "../../view/iterator_range.html" title = "iterator_range" >< tt class = "computeroutput" >< span class = "identifier" > iterator_range</ span ></ tt ></ a >
(where adapted sequence is a Bidirectional Sequence)
</ li >
< li >
< a href = "../../view/transform_view.html" title = "transform_view" >< tt class = "computeroutput" >< span class = "identifier" > transform_view</ span ></ tt ></ a >
(where adapted sequence is a Bidirectional Sequence)
</ li >
< li >
< a href = "../../view/zip_view.html" title = "zip_view" >< tt class = "computeroutput" >< span class = "identifier" > zip_view</ span ></ tt ></ a >
(where adapted sequences are models Bidirectional Sequence)
</ li >
</ ul ></ div >
</ div >
< table xmlns:rev = "http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width = "100%" >< tr >
< td align = "left" ></ td >
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< td align = "right" >< div class = "copyright-footer" > Copyright © 2001-2007 Joel de Guzman, Dan Marsden, Tobias
2007-11-07 16:22:38 +00:00
Schwinger< p >
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at < a href = "http://www.boost.org/LICENSE_1_0.txt" target = "_top" > http://www.boost.org/LICENSE_1_0.txt</ a > )
2007-11-16 08:03:15 +00:00
</ p >
</ div ></ td >
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