`sig
type ('a, 'b) t = ('a, 'b) BatMap.PMap.t
val empty : ('a, 'b) t
val is_empty : ('a, 'b) t -> bool
val create : ('a -> 'a -> int) -> ('a, 'b) t
val singleton : ?cmp:('a -> 'a -> int) -> 'a -> 'b -> ('a, 'b) t
val cardinal : ('a, 'b) t -> int
val add : 'a -> 'b -> ('a, 'b) t -> ('a, 'b) t
val remove : 'a -> ('a, 'b) t -> ('a, 'b) t
val mem : 'a -> ('a, 'b) t -> bool
val iter : ('a -> 'b -> unit) -> ('a, 'b) t -> unit
val map : ('b -> 'c) -> ('a, 'b) t -> ('a, 'c) t
val mapi : ('a -> 'b -> 'c) -> ('a, 'b) t -> ('a, 'c) t
val fold : ('b -> 'c -> 'c) -> ('a, 'b) t -> 'c -> 'c
val foldi : ('a -> 'b -> 'c -> 'c) -> ('a, 'b) t -> 'c -> 'c
val filterv : ('a -> bool) -> ('key, 'a) t -> ('key, 'a) t
val filter : ('key -> 'a -> bool) -> ('key, 'a) t -> ('key, 'a) t
val filter_map : ('key -> 'a -> 'b option) -> ('key, 'a) t -> ('key, 'b) t
val choose : ('key, 'a) t -> 'key * 'a
val split : 'key -> ('key, 'a) t -> ('key, 'a) t * 'a option * ('key, 'a) t
val min_binding : ('key, 'a) t -> 'key * 'a
val max_binding : ('key, 'a) t -> 'key * 'a
val enum : ('a, 'b) t -> ('a * 'b) BatEnum.t
val backwards : ('a, 'b) t -> ('a * 'b) BatEnum.t
val keys : ('a, 'b) t -> 'a BatEnum.t
val values : ('a, 'b) t -> 'b BatEnum.t
val of_enum : ?cmp:('a -> 'a -> int) -> ('a * 'b) BatEnum.t -> ('a, 'b) t
val for_all : ('a -> 'b -> bool) -> ('a, 'b) t -> bool
val exists : ('a -> 'b -> bool) -> ('a, 'b) t -> bool
val partition : ('a -> 'b -> bool) -> ('a, 'b) t -> ('a, 'b) t * ('a, 'b) t
val add_carry : 'a -> 'b -> ('a, 'b) t -> ('a, 'b) t * 'b option
val modify : 'a -> ('b -> 'b) -> ('a, 'b) t -> ('a, 'b) t
val modify_def : 'b -> 'a -> ('b -> 'b) -> ('a, 'b) t -> ('a, 'b) t
val modify_opt : 'a -> ('b option -> 'b option) -> ('a, 'b) t -> ('a, 'b) t
val extract : 'a -> ('a, 'b) t -> 'b * ('a, 'b) t
val pop : ('a, 'b) t -> ('a * 'b) * ('a, 'b) t
val union : ('a, 'b) t -> ('a, 'b) t -> ('a, 'b) t
val diff : ('a, 'b) t -> ('a, 'b) t -> ('a, 'b) t
val intersect : ('b -> 'c -> 'd) -> ('a, 'b) t -> ('a, 'c) t -> ('a, 'd) t
val merge :
('key -> 'a option -> 'b option -> 'c option) ->
('key, 'a) t -> ('key, 'b) t -> ('key, 'c) t
val merge_unsafe :
('key -> 'a option -> 'b option -> 'c option) ->
('key, 'a) t -> ('key, 'b) t -> ('key, 'c) t
val compare : ('b -> 'b -> int) -> ('a, 'b) t -> ('a, 'b) t -> int
val equal : ('b -> 'b -> bool) -> ('a, 'b) t -> ('a, 'b) t -> bool
module Exceptionless = BatMap.PMap.Exceptionless
module Infix = BatMap.PMap.Infix
val ( --> ) : ('a, 'b) t -> 'a -> 'b
val ( <-- ) : ('a, 'b) t -> 'a * 'b -> ('a, 'b) t
val bindings : ('key, 'a) t -> ('key * 'a) list
val print :
?first:string ->
?last:string ->
?sep:string ->
?kvsep:string ->
('a BatInnerIO.output -> 'b -> unit) ->
('a BatInnerIO.output -> 'c -> unit) ->
'a BatInnerIO.output -> ('b, 'c) t -> unit
val get_cmp : ('a, 'b) t -> 'a -> 'a -> int
val find : 'a -> ('a, 'b) BatMap.PMap.t -> 'b option
end`