Re: [Haskell-beginners] Beginners Digest, Vol 45, Issue 35

unique :: [Integer] -> [Integer] unique [] = [] unique (x:xs) | elem x xs = (unique . filter (/= x)) xs | otherwise = x : unique xs -- This is a simpler to read version (albeit inefficient?) unique :: [Integer] -> [Integer] unique [] = [] unique (x:xs) | elem x xs = unique xs | otherwise = x : unique xs