Did you have a look at: http://www.cs.cmu.edu/~rwh/theses/okasaki.pdf
After p. 50 there is a description of dequeues. I don't know how they compare to yours. -- 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