Forward Range

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### Forward Range

##### Notation

`X` | A type that is a model of Forward Range.
`a` | Object of type X.

##### Description

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

##### Refinement of

Single Pass Range

##### Associated types

Distance type | `boost::range_difference<X>::type` | A signed integral type used to represent the distance between two of the Range's iterators. This type must be the same as the iterator's distance type.
Size type | `boost::range_size<X>::type` | An unsigned integral type that can represent any nonnegative value of the Range's distance type.

##### See also

Implementation of metafunctions

Implementation of functions