Re: [Haskell-cafe] Haskell-Newbie and Char-Function

On Sat, Dec 5, 2009 at 4:48 PM, Jochem Berndsen wrote:

MeAdAstra wrote:

...

Hi guys, I only started learning Haskell some days ago. Maybe one of you can give me a hint on how to implement a function that needs a character in the range (a,b,...z) and an integer number k and returns the k-next neighbor of the character? For example, fct a 5 would result in output f.

You might want to use the functions ord and chr from Data.Char, and the mod function from the Prelude.

Right, and by the way I would suggest you reverse the parameter order of your function so that it takes the shift first, then you can write :

shift :: Int -> Char -> Char shift n c ...

rot13 :: String -> String rot13 = map (shift 13)

-- Jedaï