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akhileshs/gist:703e388430a8f0ca666c

Created April 8, 2015 12:54
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gistfile1.hs
prodToSum :: (a, Either b c) -> Either (a, b) (a, c)
prodToSum (x, e) =
case e of
Left y -> Left (x, y)
Right z -> Right (x, z)
sumToProd :: Either (a, b) (a, c) -> (a, Either b c)
sumToProd e =
case e of
Left (x, y) -> (x, Left y)
Right (x, z) -> (x, Right z)
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