Dear Haskelleers, Alcino Cunha and me are pleased to announce the release of the DrHylo tool in Hackage: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/DrHylo DrHylo is a tool for deriving hylomorphisms from a restricted Haskell syntax. It is based on the algorithm first presented in the paper Deriving Structural Hylomorphisms From Recursive Definitions at ICFP'96 by Hu, Iwasaki, and Takeichi. The generated code can be run with Pointless Haskell (< http://hackage.haskell.org/cgi-bin/hackage-scripts/package/pointless-haskell>), allowing the visualization of the recursion trees of Haskell functions. For more information, jsut follow: http://haskell.di.uminho.pt/wiki/DrHylo Any feedback is welcome. Cheers, hugo -- www.di.uminho.pt/~hpacheco