Re: [Haskell-cafe] IO in lists

17 Jan 2007


      On 16/01/07, Yitzchak Gale <gale@sefer.org> wrote:
...
listChars2 :: ListT IO Char
listChars2 = do
  c <- lift getChar
  if c == 'q'
    then return c
    else return c `mplus` listChars2
It's probably eaiser to work with normal lists:

listChars :: IO [Char]
listChars = do
  c <- getChar
  if c == 'q'
    then return c
    else liftM2 (:) (return c) listChars

-- 
-David House, dmhouse@gmail.com