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  1. newtype WithNewlines t a = WithNewlines { unNewLines :: t a }
  2.  
  3. instance (Show a, Foldable t) => Show (WithNewlines t a) where
  4.   show = unlines . concatMap (pure . show) . unNewLines
  5.  
  6. main = putStrLn $ show $ WithNewlines
  7. 	[1
  8. 	,2
  9. 	,3
  10. 	,4
  11. 	,5]
Success #stdin #stdout 0s 4364KB
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https://ideone.com/LScCEm
language:
Haskell (ghc 8.4.4)
created:
5 years ago
visibility:
secret

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