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cohama/IrrefutablePatterns.hs

Last active December 19, 2015 11:51
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IrrefutablePatterns.hs
fn :: [String] -> Int -> String
fn ~(h:t) n = if n == 0
then "oops."
else h ++ ":" ++ show t
main :: IO ()
main = putStrLn $ fn [] 0
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