+++ /dev/null
--- !!! Testing Show on Maybes and Eithers
-module Main(main) where
-
-x :: Maybe ()
-x = Nothing
-
-main :: IO ()
-main = do
- print x
- print (Just ())
- print ((Just (Just ())) :: Maybe (Maybe ()))
- print (Just x)
- print ((Left 'a') :: Either Char Int)
- print ((Right 'b') :: Either Int Char)
- print ((Right x) :: Either Int (Maybe ()))
- print ((Right (Just 'c')) :: Either Int (Maybe Char))
- print ((Right (Right 'd')) :: Either Int (Either Char Char))
- print ((Right (Left 'e')) :: Either Int (Either Char Int))
- print ((Left 'f') :: Either Char Int)
- print ((Left x) :: Either (Maybe ()) Char)
- print ((Left (Just 'g')) :: Either (Maybe Char) ())
- print ((Left (Right 'h')) :: Either (Either Int Char) Char)
- print ((Left (Right 'i')) :: Either (Either Int Char) ())
-