# Module Obj.Ephemeron

    module Ephemeron: sig .. end

Ephemeron with arbitrary arity and untyped

    type obj_t = Obj.t

alias for `Obj.t`

    type t

an ephemeron cf `Obj.Ephemeron`

    val create : int -> t

`create n` returns an ephemeron with `n` keys. All the keys and the data are initially empty. The argument `n` must be between zero and `Obj.Ephemeron.max_ephe_length` (limits included).

    val length : t -> int

return the number of keys

    val get_key : t -> int -> obj_t option

    val get_key_copy : t -> int -> obj_t option

    val set_key : t -> int -> obj_t -> unit

    val unset_key : t -> int -> unit

    val check_key : t -> int -> bool

    val blit_key : t -> int -> t -> int -> int -> unit

    val get_data : t -> obj_t option

    val get_data_copy : t -> obj_t option

    val set_data : t -> obj_t -> unit

    val unset_data : t -> unit

    val check_data : t -> bool

    val blit_data : t -> t -> unit

    val max_ephe_length : int

Maximum length of an ephemeron, ie the maximum number of keys an ephemeron could contain