Hi, you can construct the output sequence from your input sequences.
(defn merge-data [data-orig data-override] (let [override-ids (set (map :id data-override))] (concat data-override (remove (comp override-ids :id) data-orig)))) If you need your output sorted you can also add a "(sord-by :id ...)" around the concat. Sincerely Meikel -- 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