Equality is measured by the class-defined equality operator. Equality is measured by the class-defined equality operator. Inserts the value val into the collection. Equality is measured by the class-defined equality operator. Removes the first object which is equal to the object a and returns TRUE .
Equality is measured by the class-defined equality operator.
Returns the number of objects removed. Equality is measured by the class-defined equality operator. Changes the number of buckets to N , a relatively expensive operation if there are many items in the collection.