HashSet - Operators

operator[T] This operator is determines if an element is a member of the set.
operator+ This operator adds an element to the set.
operator- This operator removes an element from the set.
operator== This operator tests two sets for equality.
operator!= This operator tests two sets for inequality.
operator| This operator takes the union of two sets.
operator& This operator takes the intersection of two sets.
operator^ This operator takes the symmetric difference of two sets.
operator- This operator takes the difference of two sets.
operator< This operator determines if one set is a subset of another set
operator> This operator determines if one set is a superset of another set