Module Fold_map

module Fold_map: Fold_map

module type Foldable = sig .. end
Input signature of the functor Fold_map.Make
module type S = sig .. end
Output signature of the functor Fold_map.Make
module Make (Fold : Foldable) : S 
  with type in_value = Fold.data
  and type out_value = Fold.t
Builds a fold_map

Sexpable interface
Same as above but builds the sexp_of and of_sexp functions. Requires the passed in types to be sexpable.
module type S_sexpable = sig .. end
module type Foldable_sexpable = sig .. end
module Make_sexpable (Fold : Foldable_sexpable) : S_sexpable 
  with type in_value = Fold.data
  and type out_value = Fold.t

Polymorphic folds

Polymorphic fold take a

module type Foldable2 = sig .. end
module type S2 = sig .. end
module Make2 (Fold : Foldable2) : S2 
  with type 'a out_value = 'a Fold.t

Sexpable interface

module type Foldable2_sexpable = sig .. end
module type S2_sexpable = sig .. end
module Make2_sexpable (Fold : Foldable2_sexpable) : S2_sexpable 
  with type 'a out_value = 'a Fold.t

Predefined modules


module Cons: S2_sexpable 
  with type 'a out_value = 'a list
module Add: S_sexpable 
  with type in_value  = int
  and  type out_value = int
A fold for adding.
module Multiply: S_sexpable 
  with type in_value  = int
  and  type out_value = int