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Random Access Range

Description

A range X where boost::range_iterator<X>::type is a model of Random Access Traversal Iterator.

Refinement of

Bidirectional Range

Valid expressions

Name

Expression

Return type

Size of range

boost::size(a)

boost::range_size<X>::type

Expression semantics

Expression

Semantics

Postcondition

boost::size(a)

Returns the size of the Range, that is, its number of elements. Note boost::size(a) == 0u is equivalent to boost::empty(a).

boost::size(a) >= 0

Complexity guarantees

boost::size(a) completes in amortized constant time.

Invariants

Range size

boost::size(a) is equal to the boost::end(a) - boost::begin(a).


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