iterator

Iterator base class

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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.

iterator_traits