> import Data.Maybe > let maybe_use_haskell = [ Just 2, Just 4 ] also, in you could do your original example in a single line, List<T> ts = new List<T>(List.

> import Data.Maybe > let maybe_use_haskell = [ Just 2, Just 4 ] also, in you could do your original example in a single line, List<T> ts = new List<T>(List.fromArray({T(2),T(4)})); even though it's still messier than something with type inference.