Re: [Haskell-cafe] Does this function already exist in the libraries?

On Thu, 7 Sep 2006, Jason Dagit wrote:

I've now found the following function useful in three different programs I've written:

zipWith' :: (a -> a -> a) -> [a] -> [a] -> [a] zipWith' _ [] ys = ys zipWith' _ xs [] = xs zipWith' f (x:xs) (y:ys) = f x y : zipWith' f xs ys

Does it already exist or maybe there is another natural solution to use in its place?

I encountered that structure when adding numbers of two lists.