Hi again, or more like this:
(defn exchange! [a b & {:keys [f] {f (fn [_ v] v)}}] (let [av @a bv @b] (alter a f bv) (alter b f av))) (defn exchange-color! [a b] (exchange! a b :f #(assoc %1 :color (:color %2)))) (exchange-color! a b) 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