include Stdlib.Hashtbl.HashedType with type t := t
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 byhash
. 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 handlingStdlib.nan
correctly - (
(==)
,Hashtbl
.hash) for comparing objects by physical equality (e.g. for mutable or cyclic objects).
- (
include Stdlib.Map.OrderedType with type t := t
val compare : t -> t -> int
A total ordering function over the keys. This is a two-argument function
f
such thatf e1 e2
is zero if the keyse1
ande2
are equal,f e1 e2
is strictly negative ife1
is smaller thane2
, andf e1 e2
is strictly positive ife1
is greater thane2
. Example: a suitable ordering function is the generic structural comparison functionStdlib.compare
.
val output : Stdlib.out_channel -> t -> unit
val print : Stdlib.Format.formatter -> t -> unit