Re: [Haskell-cafe] Using catch and errors

You need a "do" not a lambda ( or use >> )

when (stuff) (do putStrLn "blah" getLine exitWith ExitSuccess)

or

when (stuff) (putStrLn "blah" >> getLine >> exitWith ExitSuccess)

Thanks a lot. Problem gone now. :)

No, that should work. Haskell equality is not at all like Java equality. In java, '=' basicaly means pointer equality. I am not aware of a way to even make that comparison in Haskell (in general). Haskell '=' behaves a lot more like equals() in Java.

Remove the length test and I think your condition will do what you expect.

Splitted in two lines and it worked fine, but I still think it should have worked fnie as was before. Thanks a lot. Best Regards NooK