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definition module StdSet
import StdClass
:: Set a
toSet :: [a] -> Set a | Eq a
fromSet :: (Set a) -> [a]
isEmptySet :: (Set a) -> Bool
isDisjoint :: (Set a) (Set a) -> Bool | Eq a
isSubset :: (Set a) (Set a) -> Bool | Eq a
isStrictSubset :: (Set a) (Set a) -> Bool | Eq a
memberOfSet :: a (Set a) -> Bool | Eq a
union :: (Set a) (Set a) -> Set a | Eq a
intersection :: (Set a) (Set a) -> Set a | Eq a
nrOfElements :: (Set a) -> Int
without :: (Set a) (Set a) -> Set a | Eq a
product :: (Set a) (Set b) -> Set (a,b)
instance zero (Set a)
instance == (Set a) | Eq a
powerSet :: (Set a) -> Set (Set a)
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