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  1. import Control.Arrow
  2. import Control.Monad
  3. import Control.Monad.Instances
  4.  
  5. square = join (*)
  6. biApply = join (***)
  7.  
  8. foo = ((uncurry (+) . biApply square) .) . (,)
  9.  
  10. main = print $ foo 3 4
Success #stdin #stdout 0.01s 3588KB
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stdin 
Standard input is empty
stdout 
25
https://ideone.com/z5HJm
language:
Haskell (ghc 8.4.4)
created:
14 years ago
visibility:
public

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