[Haskell-cafe] Trapping getChar before echo

Neil Mitchell ndmitchell at gmail.com
Sun Jan 31 05:05:26 EST 2010

Hi Mark,


Thanks, Neil

On Sun, Jan 31, 2010 at 8:47 AM, Mark Spezzano
<mark.spezzano at chariot.net.au> wrote:
> 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
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