Hashtbl.Poly_hash
A hashtable with polymorphic keys and values, such as Stdlib.Hashtbl.
Stdlib.Hashtbl
We have three types (t, key and value) and three type variables:
t
key
value
type ('k, 'v) t
val create : int -> (_, _) t
val replace : ('k, 'v) t -> 'k -> 'v -> unit
val remove : ('k, _) t -> 'k -> unit
val find_opt : ('k, 'v) t -> 'k -> 'v option