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module type LAWS = sig
type ('a, 'b) t
val category_1 : unit -> (('a, 'b) t, ('a, 'b) t) Law.t
val category_2 : unit -> (('a, 'b) t, ('a, 'b) t) Law.t
end
module For (C : Preface_specs.CATEGORY) :
LAWS with type ('a, 'b) t := ('a, 'b) C.t = struct
open Law
include Semigroupoid.For (C)
let category_1 () =
let lhs f = C.(f % id)
and rhs f = f in
law ("f % id" =~ lhs) ("f" =~ rhs)
;;
let category_2 () =
let lhs f = C.(id % f)
and rhs f = f in
law ("id % f" =~ lhs) ("f" =~ rhs)
;;
end