so how can I update the documentation? I asked some of the most experienced Haskell users at the Hackathon about this, and looked through any documentation I could find and there was nothing indicating I could do what you sent in your last message. On Sun, Apr 22, 2012 at 8:15 AM, Markus Läll <markus.l2ll@gmail.com> wrote:

The core of it is in the GHC docs' overloaded strings section [1].

It could be clearer though -- reading about defaulting in the reports, in the type defaulting section of GHC docs and in [1] can be a bit confusing.

[1] http://www.haskell.org/ghc/docs/latest/html/users_guide/type-class-extension...

On Sun, Apr 22, 2012 at 4:54 PM, Greg Weber <greg@gregweber.info> wrote:

...

Thanks Markus, I think you have saved the day! Even after googling for this extension and searching in the manual I am still coming up pretty blank. Is there somewhere I missed where this is documented or somewhere I can contribute documentation?

On Sun, Apr 22, 2012 at 4:47 AM, Markus Läll <markus.l2ll@gmail.com> wrote:

...

ExtendedDefaultRules

-- Markus Läll