(** like Hashtbl.fold but keys are processed ordered *)
val hashtbl_sorted_fold :
('a -> 'b -> 'c -> 'c) -> ('a, 'b) Hashtbl.t -> 'c -> 'c
(** like Hashtbl.fold but keys are processed ordered *)
val hashtbl_sorted_fold :
('a -> 'b -> 'c -> 'c) -> ('a, 'b) Hashtbl.t -> 'c -> 'c