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MoreLabels.Hashtbl.HashedType(3) OCamldoc MoreLabels.Hashtbl.HashedType(3)

MoreLabels.Hashtbl.HashedType - no description

Module type MoreLabels.Hashtbl.HashedType

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).

source: 2022-04-09

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