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dmjio/facCheck.hs

Created March 8, 2014 21:02
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QuickCheck test
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facCheck.hs
import Test.QuickCheck
fac :: Integer -> Integer
fac n | n < 1 = 1
| otherwise = n * fac (n - 1)
greaterThan0 :: Integer -> Bool
greaterThan0 n = not $ (fac n) < 1
main :: IO ()
main = verboseCheck greaterThan0
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