)
Returns a new set with the the elements of this that are not in other
.
That is, the returned set contains all the elements of this Set that
are not elements of other
according to other.contains
.
Source
/**
* Returns a new set with the the elements of this that are not in [other].
*
* That is, the returned set contains all the elements of this [Set] that
* are not elements of [other] according to `other.contains`.
*/
Set<E> difference(Set<E> other);