Hello Sean, Friday, November 20, 2009, 8:25:08 PM, you wrote: heh, the well known problem, i've seen it in Delphi. it even has a large list of exceptions to be ignored, but i think that better way will be to set this on a per-package and per-module basis
Perhaps I don't quite get how this works, but when I :set -fbreak-on-exception in GHCi, I get an exception using readFile. It reads the entire file and then throws what appears to be an EOF exception.
Prelude>> readFile "blah.txt"
"blah\nblah\nblah\nStopped at <exception thrown> _exception :: e = GHC.Exception.SomeException (GHC.Exception.:DException _ (GHC.Show.:DShow ...) ....) (GHC.IOBase.IOError Nothing GHC.IOBase.EOF ....)
When I :set -fno-break-on-exception, I see no exception.
I thought that lazy IO reads until it reaches the EOF, then closes the file. This happens with both 6.10.1 and 6.8.3, so perhaps this is standard stuff, and I'm missing something.
Regards, Sean
-- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com