What is the simplest way to read a character without echoing it in
Haskell? I have written a CGI program using Haskell. It behaves a little
funny, which did not happen during my experience in Perl.
In http://pllab.kaist.ac.kr/~khchoi/haskell/mastermind/,
give some digit in the text box and click `Run'. Then look
at the 2nd line, which says "number=xxxx".
Kwanghoon Choi
> From: Jose Romildo Malaquias <[EMAIL PROTECTED]>
> Subject: Reading a character without echoing it
> Date: Mon, 14 Jun 1999 07:54:32 -0300
> To: [EMAIL PROTECTED]
>
> How can a single character be read from standard input without echoing it
> to the console in Haskell 98?
>
> Bird's book mentions two functions for reading a character getChar, getCh :: IO Char
> but Haskell 98 does not seem to have getCh, which should do the no echoing reading.
>
> Thanks.
>
> Prof. Jos� Romildo Malaquias <[EMAIL PROTECTED]>
> Departamento de Computa��o
> Universidade Federal de Ouro Preto
> Brasil
