Atoms are not coordinated, so you need to use refs here: (def map-1 (ref {})) (def map-2 (ref {}))
(defn change [key1 key2 ] (dosync (alter map-1 dissoc key1) (alter map-2 dissoc key2))) Depending on your problem you might consider using just one ref instead of two as well (in that case, an atom should be fine). ~BG On Wed, Jul 16, 2014 at 8:41 AM, zhenxuanpan <zhenxuan...@gmail.com> wrote: > (def map-1 (atom {})) > (def map-2 (atom {})) > > (defn change [key1 key2 ] > (dosync > (swap! map-1 dissoc key1) > (swap! map-2 dissoc key2) > ) > ) > > is this way ok ? > > -- > 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/d/optout. > -- Baishampayan Ghose b.ghose at gmail.com -- 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/d/optout.