復習
f0 = concatMap (\a -> concatMap (\b -> concatMap (\c -> [a,b,c]) [5,6])[3,4])[1,2] f1 = [1,2] >>= \a -> ([3,4] >>= \b -> ([5,6] >>= \c -> [a,b,c])) f2 = do a <- [1,2] b <- [3,4] c <- [5,6] [a,b,c] で *Main> f0 [1,3,5,1,3,6,1,4,5,1,4,6,2,3,5,2,3,6,2,4,5,2,4,6] *Main> f1 [1,3,5,1,3,6,1,4,5,1,4,6,2,3,5,2,3,6,2,4,5,2,4,6] *Main> f2 [1,3,5,1,3,6,1,4,5,1,4,6,2,3,5,2,3,6,2,4,5,2,4,6] *Main>
あー、ぱっとはかけない。
なれなのかなぁ。なれるのかなぁ。