On Fri, May 10, 2013 at 5:04 PM, Andreas Abel <andreas.abel at ifi.lmu.de> wrote: > See also Felipe's post at: > https://groups.google.com/forum/?fromgroups=#!topic/haskell-cafe/aWtC8DRfGYs Yup! There have been so many rediscoveries that I even rediscovered it twice ;). -- Felipe.