Am Montag 15 Juni 2009 00:29:27 schrieb Erik de Castro Lopo:
Daniel Fischer wrote:
Simple solution: import Control.OldException instead of Control.Exception
I actually already had that working :-).
D'oh
Harder long-time solution: rewrite the code to work with the new system.
This is what I'd like to do. Is there a guide or howto for converting from OldException to Exception?
I don't know of one. You could use the SomeException type and have handler e = case fromException e of Just e' | isEOFError e' -> return () _ -> print e or you could only handle IOExceptions, handler e | isEOFError e = return () | otherwise = print e either way, you must somehow determine which type of exception "throwTo mainTID" in spawn throws, in the first case its type would be (SomeException -> IO ()), in the second (IOException -> IO ()). For the first case, it would probably better to have act `catch` (throwTo mainTID . toException) in spawn.
then see whether it's worth the rewrite.
As a learning exercise I thin it is :-).
I agree.
Erik