Via_dimap_and_closed.Req
type ('a, 'b) t
The type held by the Closed Profunctor.
Closed Profunctor
val dimap : ('a -> 'b) -> ('c -> 'd) -> ('b, 'c) t -> ('a, 'd) t
val closed : ('a, 'b) t -> ('c -> 'a, 'c -> 'b) t
Act on the input type of a function.