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source: downloads/boost_1_34_1/libs/mpl/doc/src/refmanual/BidirectionalSequence.rst @ 29

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updated boost from 1_33_1 to 1_34_1
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Bidirectional Sequence

Description

A |Bidirectional Sequence| is a |Forward Sequence| whose iterators model |Bidirectional Iterator|.

Refinement of

|Forward Sequence|

Expression requirements

In addition to the requirements defined in |Forward Sequence|, for any |Bidirectional Sequence| s the following must be met:

Expression Type Complexity
begin<s>::type |Bidirectional Iterator| Amortized constant time
end<s>::type |Bidirectional Iterator| Amortized constant time
back<s>::type Any type Amortized constant time

Expression semantics

|Semantics disclaimer...| |Forward Sequence|.

Expression Semantics
back<s>::type The last element in the sequence; see |back|.

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