Re: [Haskell-cafe] Re: Haskell Zippers on Wikibooks: teasing! :)

On Thu, Jul 16, 2009 at 12:11 PM, Heinrich Apfelmus wrote:

  Generic Programming: An introduction   http://www.cse.chalmers.se/~patrikj/poly/afp98/

It's a bit verbose at times, but you only need the first few chapters to get an idea about polynomial functors (sums and pairs) and  mu .

Thanks, that's a really nice introduction, which seems to be at just my level for the moment! :-) D