I realize that many people are on holiday, but I'm hoping to get some clarity about how to proceed with respect to this issue in the near future.
Can anyone tell if I'm right that this is a bug in clojure.zip? If so, then is the right thing to do to post an issue on JIRA? I've re-included the crux of the issue [slightly edited and recombined] below. Thanks, -Lee On Dec 21, 2013, at 11:49 AM, Lee Spector wrote: > When I step through a zipper made from a nested list via seq-zip, I get > extraneous nils after processing a nested (). > > Is this somehow expected behavior, or a bug, or am I misunderstanding > something fundamental? > > The problem seems to arise only when an nested empty list is present, not > other nested lists [... deleted ...] > > Here's an illustration, stepping through '(() 0) with next and printing the > node at each step: > > (loop [z (zip/seq-zip '(() 0))] > (if (zip/end? z) > :done > (do (println (zip/node z)) > (recur (zip/next z))))) > > That produces: > > (() 0) > () > nil > 0 > :done > > I don't expect the nil to be there. > [That is,] when traversing '(() 0) with zip/next, one should first visit the > root, then (), and then 0. But what actually happens is that between then () > and the 0 one lands on a non-existent nil node. So one ends up visiting 4 > nodes when there are only 3, and the extra one is a nil. -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
