val singleton : key -> 'a -> 'a tval mem : key -> 'a t -> boolval find_opt : key -> 'a t -> 'a optionval update : key -> ('a option -> 'a option) -> 'a t -> 'a tval for_all : (key -> 'a -> bool) -> 'a t -> boolval mapi : (key -> 'a -> 'b) -> 'a t -> 'b tval union : (key -> 'a -> 'a -> 'a option) -> 'a t -> 'a t -> 'a tval iter : (key -> 'a -> unit) -> 'a t -> unitval pp :
(Stdlib.Format.formatter -> 'a -> unit) ->
Stdlib.Format.formatter ->
'a t ->
unitval to_seq : 'a t -> (key * 'a) Stdlib.Seq.t