From: Neil Mitchell <ndmitchell@gmail.com>

> While I'm on the topic, I recently wrote a tool that wanted to
> traverse deep data structures as produced by haskell-src-exts. ?I
> wound up with about 50 lines of case expressions and around the time
> my hands were literally beginning to hurt decided that enough was
> enough and I should try a generic approach. ?I heard uniplate was
> pretty easy to use, and was pretty pleased to turn the entire thing
> into a single line. ?It took me a little longer to figure out I needed
> to use universeBi since all the examples were monotyped, but once I
> did it Just Worked. ?Amazing. ?So thanks again! ?And maybe you could
> mention universeBi in the instant introduction?

Yes, I probably should - I'll try and get to that. Of course, I'd also
happily accept a patch against
http://community.haskell.org/~ndm/darcs/uniplate

I use Uniplate inside HLint, and it's invaluable - there are a lot of
times when List Comp + universeBi really hits the spot.