Composition.F
type ('a, 'b) t
The type held by the Choice.
Choice
val dimap : ('a -> 'b) -> ('c -> 'd) -> ('b, 'c) t -> ('a, 'd) t
val contramap_fst : ('a -> 'b) -> ('b, 'c) t -> ('a, 'c) t
Contramapping over the first argument.
val map_snd : ('b -> 'c) -> ('a, 'b) t -> ('a, 'c) t
Mapping over the second argument.
val left : ('a, 'b) t -> (('a, 'c) Stdlib.Either.t, ('b, 'c) Stdlib.Either.t) t
Act on the left parameter of the sum.
val right : ('a, 'b) t -> (('c, 'a) Stdlib.Either.t, ('c, 'b) Stdlib.Either.t) t
Act on the right parameter of the sum.