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yanok/test.hs

Created April 22, 2018 14:30
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test.hs
data Val = VNum Double | VBool Bool
toNumber :: Val -> Double
toNumber (VNum x) = x
toNumber (VBool True) = 1
toNumber (VBool False) = 0
main :: IO ()
main = print $ (* (-1)) $ toNumber (VBool False)
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