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Jul 20th, 2017
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  1. appendCurrentTime :: String -> IO String
  2. appendCurrentTime w = do {x <- getCurrentTime;  return (w ++ show x ++ "\n")}
  3.  
  4. appendIO :: IO String -> IO String -> IO String
  5. appendIO a b = do {string1 <- a;
  6.                    string2 <- b;
  7.                    return (string1 ++ string2)}
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