operator+=()

transforming_iterator& operator+=

(

difference_type

n

)

Advances the transforming iterator by a given step from the beginning of the iterated sequence.

Parameters

n	A step by which to change the position of the iterator towards the end. If n is less than zero the advancement is done backwards, i.e. towards the beginning.

Returns

A reference to this.

The operator is only implemented by random-access transforming iterators, i.e. if the adopted iterator implements the random-access semantics.