Upcast a stream of elements to a stream of supertypes of that element. Useful in combination with fan-in operators where you do not want to pay the cost of casting each element in a map.
Upcast a stream of elements to a stream of supertypes of that element. Useful in combination with fan-in operators where you do not want to pay the cost of casting each element in a map.
Type parameters
SuperOut
a supertype to the type of element flowing out of the flow
Attributes
Returns
A flow that accepts In and outputs elements of the super type