Dilawar Singh Being Dilawar/ Tools/

Following function split a string into a list of strings at a given string. For example split “dilawar raw war” “aw” returns [“dil”, “ar r” “ war”]

split :: String -> String -> [String] split str pat = helper str pat [] [] where helper :: String -> String -> String -> String -> [String] helper [] ys n m = [n] ++ [] helper xs [] n m = [n] ++ (split xs pat) helper (x:xs) (y:ys) n m | x /= y = helper (xs) pat ((n++m)++[x]) m | otherwise = helper xs ys n (m++[y])