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  1. import Data.Semigroup
  2.  
  3. main = getFirst $ (First x) <> (First y)
  4.  
  5. x = putStrLn "x" >> return 42
  6. y = putStrLn "y" >> return 1337
  7.  
Success #stdin #stdout 0s 8388607KB
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stdin
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1
2
10
42
11
stdout
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x
https://ideone.com/PVe1uC
language:
Haskell (ghc 8.4.4)
created:
8 years ago
visibility:
public

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