On Sun, Jan 17, 2010 at 6:42 PM,
Hi,
I am trying query the instances that a data type implements. Calling reify on the data type doesn't appear to return anything relating to type classes.
I am very new to Template Haskell, so I apologize if there is a easy way to do this that I missed.
-Jonathan
I do not believe that this is possible (getting instances based on type). It, I suppose, would be possible theoretically to get at least instances in-scope, but, as type classes are open, this wouldn't, necessarily, be all type classes the date type implements. But I don't believe there's any support for navigating to instances from types. As an aside, you'd be better off sending queries about Template Haskell to the haskell-cafe@haskell.org mailing list, as this (TH) mailing list is very lightly used and there's been talk of getting rid of it. Probably anybody subscribed to this list is also subscribed to Haskell Cafe as well.