Re: [Haskell-cafe] Please tell me this function exists

On 18 Dec 2008, at 7:36 am, Brian Hurt wrote:

I know it's not hard to write, but still:

concat :: String -> [String] -> String concat _ [] = "" concat _ [x] = x concat sep x:xs = x ++ sep ++ (concat sep xs)

I've got to be stupid and missing it in the standard libraries.

You want concat (intersperse sep strings) using functions from List.