module Make: functor (H : Hashtbl.HashedType) -> WEAKPLUS with type key = H.t
Build an implementation of the weak-key hashtable structure.
Takes the same argument structure as Hashtbl.Make.
type 'a t
The type of weak-key hash table with values of type 'a
type
The key type of the hash table
val create : int -> 'a t
Create a new, empty hash table with the given initial size.
The table grows as needed.
val resize : ?size:int -> 'a t -> unit
Resize a hash table. If no ?size is given, guesses based
on the current size of the table.
val add : 'a t -> key -> 'a -> unit
Bind a key to a value, replacing any previous value.
val remove : 'a t -> key -> unit
Remove a key-value association.
val find' : 'a t -> key -> 'a option
Look up a value by a key, returning None if not found.
val find : 'a t -> key -> 'a
Look up a value by a key, raising Not_found if not found.
val mem : 'a t -> key -> bool
Is a key present in the table?
val count : 'a t -> int
How many keys are present in the table?
val iter : (key -> 'a -> unit) -> 'a t -> unit
Apply a function to all bindings in a table.