[Haskell-cafe] Intro to monad transformers

[Henning Thielemann]

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/Control-Monad-Trans-Maybe.html