On Mon, Dec 22, 2008 at 6:52 PM, Antoine Latter wrote:

2008/12/22 Luke Palmer :

...

Yeah, it'd be useful. Doesn't really matter, though, because it's on Hackage (http://hackage.haskell.org), so it's just a cabal install MaybeT away. Now that cabal and cabal-install are reasonably mature, we really don't have to worry about what's blessed as "standard" anymore. :-)

Although I still had to use my own because I wanted a MonadPlus instance. I would offer a patch, but since there's more than one useful MonadPlus instance for MaybeT it probably still wouldn't be right for everyone.

There are? The only two I can think of are the left-biased and its dual, in which case the convention is to choose the left-biased one. Is there another? Luke

On Tue, Dec 23, 2008 at 2:52 AM, Antoine Latter wrote:

Although I still had to use my own because I wanted a MonadPlus instance. I would offer a patch, but since there's more than one useful MonadPlus instance for MaybeT it probably still wouldn't be right for everyone.

Umh, there is a MonadPlus instance in the package? http://hackage.haskell.org/packages/archive/MaybeT/0.1.2/doc/html/Control-Mo... (It's the one based on the Maybes.) - Benja

On Tue, Dec 23, 2008 at 1:08 PM, Benja Fallenstein wrote:

On Tue, Dec 23, 2008 at 8:05 PM, Benja Fallenstein wrote:

...

Umh, there is a MonadPlus instance in the package?

Ah: ...in the version Cale uploaded two days ago, not in the previous version. Sorrynevermindisee :)

No, you're right - the haddock generated docs say that their is a MonadPlus instances, but the hand-written notes say that there isn't. That's what I get for reading the documentation. -Antoine