NAME¶
MoreLabels.Hashtbl.HashedType - no description
Module type¶
Module type MoreLabels.Hashtbl.HashedType
Documentation¶
Module type
HashedType
=
Hashtbl.HashedType
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
(provided objects do not contain floats)
- (
(fun x y -> compare x y = 0) ,
Hashtbl.hash ) for comparing
objects by structure and handling
Pervasives.nan correctly
- (
(==) ,
Hashtbl.hash ) for comparing objects by physical
equality (e.g. for mutable or cyclic objects).