[Haskell-cafe] Re: Haskell and the Software design process

On Sun, 2010-05-02 at 21:35 -0700, Alexander Dunlap wrote:

f ys = let xs = (1:ys) in last xs

uses the partial function "last". Rewriting it in the "non-partial style" gives

f ys = case (1:ys) of [] -> Nothing xs -> Just (last xs)

I guess it is more like f :: Num a => [a] -> a f = fromMaybe 1 . safeLast Regards