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Module Ephemeron.GenHashTable

module GenHashTable: sig .. end

Define a hash table on generic containers which have a notion of "death" and aliveness. If a binding is dead the hash table can automatically remove it.

type equal =
| ETrue
| EFalse
| EDead (*

the container is dead

*) 
module MakeSeeded: 
functor (H : sig
type t

keys

type 'a container

contains keys and the associated data

val hash : int -> t -> int

same as Hashtbl.SeededHashedType

val equal : 'a container ->
       t -> Ephemeron.GenHashTable.equal

equality predicate used to compare a key with the one in a container. Can return EDead if the keys in the container are dead

val create : t ->
       'a -> 'a container

create key data creates a container from some initials keys and one data

val get_key : 'a container ->
       t option

get_key cont returns the keys if they are all alive

val get_data : 'a container -> 'a option

get_data cont returns the data if it is alive

val set_key_data : 'a container ->
       t -> 'a -> unit

set_key_data cont modifies the key and data

val check_key : 'a container -> bool

check_key cont checks if all the keys contained in the data are alive

end) -> Ephemeron.SeededS  with type key = H.t

Functor building an implementation of an hash table that use the container for keeping the information given