Module Hmap.S.Key

module Key: sig .. end

Keys.

Keys

type 'a info

The type for key information.

val create : 'a info -> 'a Hmap.S.key

create i is a new key with information i.

val info : 'a Hmap.S.key -> 'a info

info k is k's information.

Exisential keys allow to compare keys. This can be useful for functions like Hmap.S.filter.

type t

The type for existential keys.

val hide_type : 'a Hmap.S.key -> t

hide_type k is an existential key for k.

val equal : t -> t -> bool

equal k k' is true iff k and k' are the same key.

val compare : t -> t -> int

compare k k' is a total order on keys compatible with Hmap.S.Key.equal.