# Module BatHashtbl.S.Labels

    module Labels: sig .. end

Operations on `Hashtbl` with labels.

This module overrides a number of functions of `Hashtbl` by functions in which some arguments require labels. These labels are there to improve readability and safety and to let you change the order of arguments to functions. In every case, the behavior of the function is identical to that of the corresponding function of `Hashtbl`.

    val add : 'a BatHashtbl.S.t -> key:BatHashtbl.S.key -> data:'a -> unit

    val replace : 'a BatHashtbl.S.t -> key:BatHashtbl.S.key -> data:'a -> unit

    val iter : f:(key:BatHashtbl.S.key -> data:'a -> unit) -> 'a BatHashtbl.S.t -> unit

    val map : f:(key:BatHashtbl.S.key -> data:'a -> 'b) ->
           'a BatHashtbl.S.t -> 'b BatHashtbl.S.t

    val filter : f:('a -> bool) -> 'a BatHashtbl.S.t -> 'a BatHashtbl.S.t

    val filteri : f:(key:BatHashtbl.S.key -> data:'a -> bool) ->
           'a BatHashtbl.S.t -> 'a BatHashtbl.S.t

    val filter_map : f:(key:BatHashtbl.S.key -> data:'a -> 'b option) ->
           'a BatHashtbl.S.t -> 'b BatHashtbl.S.t

    val fold : f:(key:BatHashtbl.S.key -> data:'a -> 'b -> 'b) ->
           'a BatHashtbl.S.t -> init:'b -> 'b