I always forget how to write Haskell-like function signatures in F#.
type AddOne = int -> int let addOne : AddOne = fun i -> i + 1
You can think of
AddOne as an interface in OO-languages, for functions.
Basically, it’s a (C#) delegate, with less boilerplate.
The beauty of it: I can model my domain with
AddOne, without caring about the implementation of