import System.IO import Data.Char main = do hSetEcho stdin False hSetBuffering stdin NoBuffering hSetBuffering stdout NoBuffering scanLine where scanLine = do c <- hGetChar stdin putChar . toUpper $ c scanLine Am Sonntag, den 31.01.2010, 19:17 +1030 schrieb Mark Spezzano:
Hi,
Is there any way of trapping keystrokes in Haskell, modifying them, and then echoing?
Basically I want to give the user a prompt like:
and then have whatever they type appear in UPPERCASE regardless of whether caps lock was on or not.
By default Haskell seems to echo characters in whatever case they were typed. I want to sneak in a toUpper in before the Chars get echoed.
Thanks
Mark Spezzano
_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe