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open Preface_core.Fun
module Core_via_divide_and_conquer
(Req : Preface_specs.Divisible.WITH_DIVIDE_AND_CONQUER) =
struct
include Req
let contramap f x = (divide ((fun x -> ((), x)) % f) conquer) x
end
module Core_via_contramap_and_divide_and_conquer
(Req : Preface_specs.Divisible.WITH_CONTRAMAP_AND_DIVIDE_AND_CONQUER) =
Req
module Operation (Core : Preface_specs.Divisible.CORE) = struct
include Contravariant.Operation (Core)
let divided x = Core.divide id x
let conquered = Core.conquer
end
module Infix
(Core : Preface_specs.Divisible.CORE)
(Operation : Preface_specs.Divisible.OPERATION with type 'a t = 'a Core.t) =
struct
include Contravariant.Infix (Core) (Operation)
let ( >*< ) = Operation.divided
let ( ^*^ ) = Operation.divided
let ( >* ) x = Core.divide (fun x -> (x, ())) x
let ( ^* ) = ( >* )
let ( *< ) x y = Core.divide (fun x -> ((), x)) x y
let ( &* ) = ( *< )
end
module Via
(Core : Preface_specs.Divisible.CORE)
(Operation : Preface_specs.Divisible.OPERATION)
(Infix : Preface_specs.Divisible.INFIX) =
struct
include Core
include Operation
include Infix
module Infix = Infix
end
module Via_divide_and_conquer
(Req : Preface_specs.Divisible.WITH_DIVIDE_AND_CONQUER) =
struct
module Core = Core_via_divide_and_conquer (Req)
include Core
module Operation = Operation (Core)
include Operation
module Infix = Infix (Core) (Operation)
include Infix
end
module Via_contramap_and_divide_and_conquer
(Req : Preface_specs.Divisible.WITH_CONTRAMAP_AND_DIVIDE_AND_CONQUER) =
struct
module Core = Core_via_contramap_and_divide_and_conquer (Req)
include Core
module Operation = Operation (Core)
include Operation
module Infix = Infix (Core) (Operation)
include Infix
end
module Over_contravariant
(Contravariant : Preface_specs.Contravariant.CORE)
(Req : Preface_specs.Divisible.WITH_DIVIDE_AND_CONQUER
with type 'a t = 'a Contravariant.t) =
Via_contramap_and_divide_and_conquer (struct
include Req
let contramap = Contravariant.contramap
end)