An execution context, required to create or register an on completion callback on a Future.
An execution context, required to create or register an on completion callback on a Future.
A (potentially in-progress) computation
A (potentially in-progress) computation
A container to receive the final value of the computation
A container to receive the final value of the computation
Any data type isomorphic to scala.
Any data type isomorphic to scala.util.Try.