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Taneb/PolyRec.hs Secret

Created June 9, 2021 11:28
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PolyRec.hs
module PolyRec where
data Foo a = Nil | Foo a (Foo (a, a))
size :: Foo a -> Int
size Nil = 0
size (Foo _ xs) = 1 + 2 * size xs
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