NAME

       MoreLabels.Hashtbl.HashedType     -     The     input    signature    of    the    functor
       MoreLabels.Hashtbl.Make.

Module type

       Module type   MoreLabels.Hashtbl.HashedType

Documentation

       Module type HashedType
        = sig end

       The input signature of the functor MoreLabels.Hashtbl.Make .

       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

       -        ( (=) , MoreLabels.Hashtbl.HashedType.hash ) for comparing objects  by  structure
       (provided objects do not contain floats)

       -         (  (fun  x  y  ->  compare  x  y = 0) , MoreLabels.Hashtbl.HashedType.hash ) for
       comparing objects by structure and handling nan correctly

       -        ( (==) , MoreLabels.Hashtbl.HashedType.hash ) for comparing objects  by  physical
       equality (e.g. for mutable or cyclic objects).