Does anyone know how this compares to Generic Programming in Haskell? There are lots of different approaches the Haskell people took when solving this problem o

Does anyone know how this compares to Generic Programming in Haskell? There are lots of different approaches the Haskell people took when solving this problem of traversing ASTs. http://www.haskell.org/haskellwiki/Generics http://www.haskell.org/haskellwiki/Generics http://www.haskell.org/haskellwiki/Research_papers/Generics http://www.haskell.org/haskellwiki/Research_papers/Generics