## Parameters

`module H : HashedType`

## Signature

`type key = H.t`
`type 'a t = 'a Stdlib.Hashtbl.Make(H).t`
`val create : int -> 'a t`
`val length : 'a t -> int`
`val is_empty : 'a t -> bool`
`val clear : 'a t -> unit`
`val reset : 'a t -> unit`
`val copy : 'a t -> 'a t`
`val add : 'a t -> key -> 'a -> unit`
`val remove : 'a t -> key -> unit`
`val remove_all : 'a t -> key -> unit`
`val find : 'a t -> key -> 'a`
`val find_all : 'a t -> key -> 'a list`
`val find_default : 'a t -> key -> 'a -> 'a`
`val find_option : 'a t -> key -> 'a option`
`val find_opt : 'a t -> key -> 'a option`
`val replace : 'a t -> key -> 'a -> unit`
`val mem : 'a t -> key -> bool`
`val iter : (key -> 'a -> unit) -> 'a t -> unit`
`val for_all : (key -> 'a -> bool) -> 'a t -> bool`
`val fold : (key -> 'a -> 'b -> 'b) -> 'a t -> 'b -> 'b`
`val exists : (key -> 'a -> bool) -> 'a t -> bool`
`val map : (key -> 'b -> 'c) -> 'b t -> 'c t`
`val map_inplace : (key -> 'a -> 'a) -> 'a t -> unit`
`val filter : ('a -> bool) -> 'a t -> 'a t`
`val filter_inplace : ('a -> bool) -> 'a t -> unit`
`val filteri : (key -> 'a -> bool) -> 'a t -> 'a t`
`val filteri_inplace : (key -> 'a -> bool) -> 'a t -> unit`
`val filter_map : (key -> 'a -> 'b option) -> 'a t -> 'b t`
`val filter_map_inplace : (key -> 'a -> 'a option) -> 'a t -> unit`
`val modify : key -> ('a -> 'a) -> 'a t -> unit`
`val modify_def : 'a -> key -> ('a -> 'a) -> 'a t -> unit`
`val modify_opt : key -> ('a option -> 'a option) -> 'a t -> unit`
`val merge : (key -> 'a option -> 'b option -> 'c option) -> 'a t -> 'b t -> 'c t`
`val merge_all : (key -> 'a list -> 'b list -> 'c list) -> 'a t -> 'b t -> 'c t`
`val stats : 'a t -> statistics`
`val to_seq : 'a t -> (key * 'a) Stdlib.Seq.t`
`val to_seq_keys : _ t -> key Stdlib.Seq.t`
`val to_seq_values : 'a t -> 'a Stdlib.Seq.t`
`val add_seq : 'a t -> (key * 'a) Stdlib.Seq.t -> unit`
`val replace_seq : 'a t -> (key * 'a) Stdlib.Seq.t -> unit`
`val of_seq : (key * 'a) Stdlib.Seq.t -> 'a t`
`val keys : 'a t -> key BatEnum.t`
`val values : 'a t -> 'a BatEnum.t`
`val enum : 'a t -> (key * 'a) BatEnum.t`
`val to_list : 'a t -> (key * 'a) list`
`val of_enum : (key * 'a) BatEnum.t -> 'a t`
`val of_list : (key * 'a) list -> 'a t`
`val print : ?first:string -> ?last:string -> ?sep:string -> ('a BatInnerIO.output -> key -> unit) -> ('a BatInnerIO.output -> 'b -> unit) -> 'a BatInnerIO.output -> 'b t -> unit`

## Override modules

The following modules replace functions defined in `Hashtbl` with functions behaving slightly differently but having the same name. This is by design: the functions meant to override the corresponding functions of `Hashtbl`.

`module Exceptionless : sig ... end`

Operations on `Hashtbl` without exceptions.

`module Infix : sig ... end`

Infix operators over a `BatHashtbl`

`module Labels : sig ... end`

Operations on `Hashtbl` with labels.