Re: [Haskell-cafe] template haskell for typeclass synonyms

On 1 November 2010 17:53, Paolino wrote:

I'd like to have a template haskell function that take some constraints and a class name and write an empty class from those and relative empty instance to simulate typeclass synonyms.

As I've never written TH and couldn't find a easily adaptable code around, I ask here for the code, or some hints on how to arrive there.

I took Justin Bailey's haskelldb-th library as a TH example to work from and rewrote one TH function to try my hand at it, it's quite easy to follow with a simple example: http://hpaste.org/paste/41035/demo Maybe this is enough example to get you going. The rest you can find syntax parts from the TH Haddock documentation.