NAME¶

Ephemeron.K2.Make - Functor building an implementation of a weak hash table

Module¶

Module Ephemeron.K2.Make

Documentation¶

Module Make
: functor (H1 : Hashtbl.HashedType) (H2 : Hashtbl.HashedType) -> sig end

Functor building an implementation of a weak hash table

Parameters:

"H1"

Stdlib.Hashtbl.HashedType

"H2"

Stdlib.Hashtbl.HashedType

Propose the same interface as usual hash table. However since the bindings are weak, even if mem h k is true, a subsequent find h k may raise Not_found because the garbage collector can run between the two.

Moreover, the table shouldn't be modified during a call to iter . Use filter_map_inplace in this case.

type key

type 'a t

val create : int -> 'a t

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 find : 'a t -> key -> 'a

val find_opt : 'a t -> key -> 'a option

val find_all : 'a t -> key -> 'a list

val replace : 'a t -> key -> 'a -> unit

val mem : 'a t -> key -> bool

val iter : (key -> 'a -> unit) -> 'a t -> unit

val filter_map_inplace : (key -> 'a -> 'a option) -> 'a t -> unit

val fold : (key -> 'a -> 'b -> 'b) -> 'a t -> 'b -> 'b

val length : 'a t -> int

val stats : 'a t -> Hashtbl.statistics

val to_seq : 'a t -> (key * 'a) Seq.t

val to_seq_keys : 'a t -> key Seq.t

val to_seq_values : 'a t -> 'a Seq.t

val add_seq : 'a t -> (key * 'a) Seq.t -> unit

val replace_seq : 'a t -> (key * 'a) Seq.t -> unit

val of_seq : (key * 'a) Seq.t -> 'a t

val clean : 'a t -> unit

remove all dead bindings. Done automatically during automatic resizing.

val stats_alive : 'a t -> Hashtbl.statistics

same as Hashtbl.SeededS.stats but only count the alive bindings