Iterator base class
A base iterator class.
None
#include <iterator> template <class Category, class T, class Distance = ptrdiff_t, class Pointer = T*, class Reference = T&> struct iterator { typedef T value_type; typedef Distance difference_type; typedef Pointer pointer; typedef Reference reference; typedef Category iterator_category; };
The iterator structure is a base class from which all other iterator types can be derived. This structure defines an interface that consists of five public types: value_type, difference_type, pointer, reference, and iterator_category. These types are used primarily by classes derived from iterator and by the iterator_traits class.
See the iterators section for a description of iterators and the capabilities associated with various types.