Tuple (core_kernel.Core

module T2 : sig ... end

Signature for a 2-tuple module

module T3 : sig ... end

Signature for a 3-tuple module

These functors allow users to write:

module Foo = struct
  include Tuple.Make       (String) (Int)
  include Tuple.Comparable (String) (Int)
  include Tuple.Hashable   (String) (Int)
  include Tuple.Binable    (String) (Int)
end

module Make : functor (T1 : sig ... end) -> functor (T2 : sig ... end) -> sig ... end

module type Comparable_sexpable = sig ... end

module Comparable_plain : functor (S1 : Comparable.S_plain) -> functor (S2 : Comparable.S_plain) -> sig ... end

module Comparable : functor (S1 : Comparable_sexpable) -> functor (S2 : Comparable_sexpable) -> Comparable_sexpable with type t := Make(S1)(S2).t

module type Hashable_sexpable = sig ... end

module Hashable : functor (S1 : Hashable_sexpable) -> functor (S2 : Hashable_sexpable) -> Hashable_sexpable with type t := Make(S1)(S2).t

The difference between Hashable and Hashable_t functors is that the former's result type doesn't contain type t and the latter does. Therefore, Hashable can't be used to combine two pairs into 4-tuple. but Hashable_t can. On the other hand result of Hashable_t cannot be combined with Comparable.

module Hashable_t : functor (S1 : Hashable_sexpable) -> functor (S2 : Hashable_sexpable) -> Hashable_sexpable with type t = Make(S1)(S2).t

module Sexpable : functor (S1 : Sexpable.S) -> functor (S2 : Sexpable.S) -> Sexpable.S with type t := Make(S1)(S2).t

module Binable : functor (B1 : Binable.S) -> functor (B2 : Binable.S) -> Binable.S with type t := Make(B1)(B2).t

module Hasher : functor (H1 : sig ... end) -> functor (H2 : sig ... end) -> Hashable_sexpable with type t := Make(H1)(H2).t