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jutememo/foldr3.hs

Created May 5, 2011 03:51
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foldr3.hs
foldr3 _ z [] k = k z
foldr3 f_cps z (x:xs ) k = f_cps x (foldr3 f_cps z xs k) $ \y -> k y
main = do print $ foldr3 (\x y k -> k $ x + y) 0 [1..3] id
print $ foldr3 (\x y k -> k $ x + y) 0 [1..3] (* 2)
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