package dolmen

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Heterogeneous Maps

type 'a injection

An accessor for values of type 'a in any map. Values put in the map using a key can only be retrieved using this very same key.

val create_inj : unit -> 'a injection

Return a value that works for a given type of values. This function is normally called once for each type of value. Several keys may be created for the same type, but a value set with a given setter can only be retrieved with the matching getter. The same key can be reused across multiple maps (although not in a thread-safe way).

module type S = sig ... end
module type ORD = sig ... end
module Make (X : ORD) : S with type key = X.t
OCaml

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