14 Apr
2009
14 Apr
'09
4:16 p.m.
On Tue, 14 Apr 2009, brian@lorf.org wrote:
On Tuesday, 14.04.09 at 23:36, Miguel Mitrofanov wrote:
What about ErrorT monad transformer?
I don't see how it helps in my situation. ErrorT doesn't catch exceptions, for example. Suppose I did make something like ErrorT that catches exceptions and turn them into Lefts. Where would (>>=) get my specific error constructor?
With explicit-exception you would call Exc.fromEitherT $ try $ execute path options The package has some hidden modules, where I experiment with a special IO type that cannot throw exceptions.