fEvenSum'' :: [Integer] -> Integer
fEvenSum'' l = foldl (\x y -> x + y) 0 (filter even l)
fEvenSum'' :: [Integer] -> Integer
fEvenSum'' l = foldl (\x y -> x + y) 0 (filter even l)
fEvenSum'' l = foldl (\x y -> x + y) 0 (filter even l)