ExtHashtbl.Hashtbl

# Module ExtHashtbl.Hashtbl

    module Hashtbl: sig .. end

    type ('a, 'b) t = ('a, 'b) Hashtbl.t

The type of a hashtable.

###### New Functions

    val exists : ('a, 'b) t -> 'a -> bool

`exists h k` returns true is at least one item with key `k` is found in the hashtable.

    val keys : ('a, 'b) t -> 'a Enum.t

Return an enumeration of all the keys of a hashtable. If the key is in the Hashtable multiple times, all occurrences will be returned.

    val values : ('a, 'b) t -> 'b Enum.t

Return an enumeration of all the values of a hashtable.

    val enum : ('a, 'b) t -> ('a * 'b) Enum.t

Return an enumeration of (key,value) pairs of a hashtable.

    val of_enum : ('a * 'b) Enum.t -> ('a, 'b) t

Create a hashtable from a (key,value) enumeration.

    val find_default : ('a, 'b) t -> 'a -> 'b -> 'b

Find a binding for the key, and return a default value if not found

    val find_option : ('a, 'b) Hashtbl.t -> 'a -> 'b option

Find a binding for the key, or return `None` if no value is found

    val remove_all : ('a, 'b) t -> 'a -> unit

Remove all bindings for the given key

    val map : ('b -> 'c) -> ('a, 'b) t -> ('a, 'c) t

`map f x` creates a new hashtable with the same keys as `x`, but with the function `f` applied to all the values

    val length : ('a, 'b) t -> int

Return the number of elements inserted into the Hashtbl (including duplicates)

###### Older Functions

Please refer to the Ocaml Manual for documentation of these functions. (note : functor support removed to avoid code duplication).

    val create : int -> ('a, 'b) t

    val clear : ('a, 'b) t -> unit

    val add : ('a, 'b) t -> 'a -> 'b -> unit

    val copy : ('a, 'b) t -> ('a, 'b) t

    val find : ('a, 'b) t -> 'a -> 'b

    val find_all : ('a, 'b) t -> 'a -> 'b list

    val mem : ('a, 'b) t -> 'a -> bool

    val remove : ('a, 'b) t -> 'a -> unit

    val replace : ('a, 'b) t -> 'a -> 'b -> unit

    val iter : ('a -> 'b -> unit) -> ('a, 'b) t -> unit

    val fold : ('a -> 'b -> 'c -> 'c) -> ('a, 'b) t -> 'c -> 'c

    val hash : 'a -> int