Don't know why nil is returned instead of {}, but > (+) => 0 > (*) => 1
following that line of reasoning: > (merge nil {:a 1}) {:a 1} > (merge {} {:a 1}) {:a 1} -- 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