package preface

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Module `Contravariant.Composition`

module F : Preface_specs.FUNCTOR

module G : Preface_specs.CONTRAVARIANT

type 'a t = 'a G.t F.t

Type

The type held by the Contravariant Functor.

val contramap : ('a -> 'b) -> 'b t -> 'a t

Mapping over from 'a to 'b over 'b t to 'a t.

val replace : 'b -> 'b t -> 'a t

Replace all locations in the output with the same value.

module Infix : Preface_specs.Contravariant.INFIX with type 'a t := 'a t

val (>$) : 'b -> 'b t -> 'a t

Infix version of OPERATION.replace.

val (^$) : 'b -> 'b t -> 'a t

Right-associative version of >$.

val ($<) : 'b t -> 'b -> 'a t

Infix flipped version of OPERATION.replace.

val (&$) : 'b t -> 'b -> 'a t

Right-associative version of $<.

val (>$<) : ('a -> 'b) -> 'b t -> 'a t

Infix version of CORE.map.

val (^$^) : ('a -> 'b) -> 'b t -> 'a t

Right-associative version of >$<.

val (>&<) : 'b t -> ('a -> 'b) -> 'a t

Infix flipped version of CORE.map.

val (^&^) : 'b t -> ('a -> 'b) -> 'a t

Right-associative version of >&<.