toPersistentHashSet
Returns a persistent set containing all elements from this iterable.
If the receiver is already a persistent hash set, returns it as is. If the receiver is a persistent hash set builder, calls build on it and returns the result.
Order of the elements in the returned set is unspecified.
Returns a persistent set of all elements of this array.
Order of the elements in the returned set is unspecified.
Returns a persistent set of all elements of this sequence.
Order of the elements in the returned set is unspecified.
Returns a persistent set of all characters.
Order of the elements in the returned set is unspecified.