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NAME

       MoreLabels.Hashtbl.HashedType - no description

Module type

       Module type   MoreLabels.Hashtbl.HashedType

Documentation

       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).