26 Dec
2010
26 Dec
'10
2:32 p.m.
On Sun, 26 Dec 2010, Antoine Latter wrote:
I haven't had a chance to dig into your example, but you might want to try the maybeT library:
http://hackage.haskell.org/package/MaybeT
That way you could try to narrow down where the error is coming from.
MaybeT is also part of transformers library now. http://hackage.haskell.org/packages/archive/transformers/0.2.2.0/doc/html/Co...