Module type Hashtbl.HashedType

module type HashedType = sig .. end
The input signature of the functor Hashtbl.Make.

type t;
The type of the hashtable keys.
let equal: (t, t) => bool;
The equality predicate used to compare keys.
let hash: t => int;
A hashing function on keys. It must be such that if two keys are equal according to equal, then they have identical hash values as computed by hash. Examples: suitable (equal, hash) pairs for arbitrary key types include