operator-
Prev  Chapter 13.  Db_vector_iterator  Next

operator-

Function Details

self operator-(difference_type n) const

Iterator movement operator.

Return another iterator by moving this iterator forward by n elements.

Parameters

n

The amount and direction of movement. If negative, will move backward by |n| element.

Return Value

The new iterator at new position.

See Also

db_vector_base_iterator::operator-(difference_type n) const 

difference_type operator-(const self &itr) const

Iterator distance operator.

Return the index difference of this iterator and itr, so if this iterator sits on an element with a smaller index, this call will return a negative number.

Parameters

itr

The other iterator to substract. itr can be the invalid iterator after last element or before first element, their index will be regarded as last element's index + 1 and -1 respectively.

Return Value

The index difference.

See Also

db_vector_base_iterator::operator-(const self& itr) const

Group: Iterator movement operators.

These functions have identical behaviors and semantics as those of db_vector_base_iterator , so please refer to equivalent in that class.

Class

db_vector_iterator

Prev  Up  Next
operator+=   Home   operator-=