7 Jul
2005
7 Jul
'05
2:55 p.m.
Bulat Ziganshin wrote:
Hello Colin,
Thursday, July 07, 2005, 4:33:39 PM, you wrote:
type FilterProgram = [Line] -> [Line]
CR> interact :: (String -> String) -> IO ()
and there is lines and unlines functions to do just what yopu need
example: main = interact (unlines.filter(not.null).lines)
Could you also insert a prompt that is shown before the lines are read? (The first prompt seems to be tricky assuming line buffering ) Christian