STL Iterators

An object that can “iterate” over elements. May be all or part of a STL container.
An iterator represents a certain position in a container.
Operator *
- Returns the element of the actual position.
Operator ++
- Lets the iterator step forward to the next element.
- Most iterators also allow stepping backwards by using operator - -
Operator == and !=
- Returns whether two iterators represent the same position.
Operator =
- Assigns an iterator (the position of the element to which it refers)