module type SeededHashedType =sig..end
The input signature of the functor Hashtbl.MakeSeeded.
type 
The type of the hashtable keys.
val equal : t -> t -> boolThe equality predicate used to compare keys.
val seeded_hash : int -> t -> intA seeded hashing function on keys.  The first argument is
          the seed.  It must be the case that if equal x y is true,
          then seeded_hash seed x = seeded_hash seed y for any value of
          seed.  A suitable choice for seeded_hash is the function
          Hashtbl.seeded_hash below.