Module `Make.Key`

Keys.

Keys

type 'a info = 'a Key_info.t: The type for key information.

val create : 'a info -> 'a key: create i is a new key with information i.

val info : 'a key -> 'a info: info k is k's information.

Existential keys

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

type t: The type for existential keys.

val hide_type : 'a 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 equal.