her.esy.fun/src/posts/0010-Haskell-Now/evenSum_v3.hs
Yann Esposito (Yogsototh) 7784f02483
wip
2019-12-25 16:35:56 +01:00

9 lines
199 B
Haskell

-- Version 3
evenSum l = accumSum 0 l
where
accumSum n [] = n
accumSum n (x:xs) =
if even x
then accumSum (n+x) xs
else accumSum n xs