Hashtbl.HashedType(3o)
NAME
Hashtbl.HashedType - The input signature of the functor Hashtbl.Make.
Module type
Module type Hashtbl.HashedType
Documentation
- Module type HashedType
- = sig end
- The input signature of the functor Hashtbl.Make .
- type t
- The type of the hashtable keys.
- val equal : t -> t -> bool
- The equality predicate used to compare keys.
- val 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 ( (=) , Hashtbl.hash ) for comparing objects by structure, ( (fun x y -> compare x y = 0) , Hashtbl.hash ) for comparing objects by structure and handling Pervasives.nan correctly, and ( (==) , Hashtbl.hash ) for comparing objects by addresses (e.g. for cyclic keys).