package preface

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Module `Joker.To_profunctor`

module F : Preface_specs.Functor.CORE

type ('a, 'b) t = 'b F.t

The type held by the Profunctor.

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.