On Wed, Aug 19, 2009 at 6:16 AM, Neil Mitchell
Why not: if done then return () else do prob <- getLine test prob main
I've given up on using if-then-else in do expressions. They confuse emacs. There is a proposal for Haskell' to fix the problem, but until then, I will not use them in do expressions. I'm so glad new languages do not use the offset rule. I get tired typing tab in emacs, especially since for most other languages, emacs does so well at picking a good indent. Requiring coders to spend so much time choosing indents reminds me of the days when I wrote C code with vi. I've been there, done that, and moved on to emacs.
unless done $ do prob <- getLine test prob main
I do like this suggestion. Thanks. John