asSet () : Set(T)

It is used to convert a value or collection into a Set, which is an unordered collection that contains no duplicate elements. This operator is especially useful when an expression requires a Set but the value you have is a single object, a Sequence, or a Bag. When applied to a single object, it wraps it into a Set containing just that element; when applied to a collection, it removes any duplicates and returns a clean Set.

Returns a Set containing all elements of self.

Expression	Result
Sequence{1, 2.0, '3'}->asSet()	Set{1, '3', 2.0}
Sequence{1, 1, 2.0, '3'}->asSet()	Set{'3', 1, 2.0}
Bag{1, 2.0, '3'}->asSet()	Set{2.0, 1, '3'}
Bag{1, 1, 2.0, '3'}->asSet()	Set{1, '3', 2.0}
OrderedSet{1, 2.0, '3'}->asSet()	Set{1, '3', 2.0}
OrderedSet{1, 1, 2.0, '3'}->asSet()	Set{'3', 1, 2.0}
Set{1, 2.0, '3'}->asSet()	Set{2.0, 1, '3'}
Set{1, 1, 2.0, '3'}->asSet()	Set{'3', 1, 2.0}

Example:

Department.allInstances.asSet()

Results: