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*Main> abs 2-3 -1 *Main> abs (2-3) 1 *Main> abs $ 2-3 1
*Main> putStr "Hello" >> putStr " " >> putStrLn "world" Hello world *Main> do {putStr "hello"; putStr " "; putStrLn "world"} hello world
*Main> getLine >>= (\ str -> if str=="Hi" then putStrLn "Hello" else putStrLn "Pardon?") Hi Hello *Main> do {str <- getLine; if str=="Hi" then putStrLn "Hello" else putStrLn "Pardon?"} Hi Hello