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Update haskell.html.markdown

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ilyagr 2013-07-03 15:25:36 -07:00
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commit fd2b88e576
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@ -307,6 +307,7 @@ Just 1
main :: IO ()
main = putStrLn "Hello, sky! " ++ (say Blue)
-- putStrLn has type putStrLn :: String -> IO()
-- It is easiest to do IO if you can implement your program as
-- a function from String to String.