On Jul 19, 12:53 pm, Richard Newman <holyg...@gmail.com> wrote: > > * Can the body of the db-push function be simplified? > > I think so. Untested: > > (defn db-push > ([key val] (db-push key val *default-db*)) > ([key val db] > (swap! db assoc key (cons val (db key))))))
If I add an @ it runs: (defn db-push ([key val] (db-push key val *default-db*)) ([key val db] (swap! db assoc key (cons val (@db key))))) But I think it's broken in the face of concurrency, as I capture the value of @db at the time of the call to the function swap! Actually using an ' instead of the @ seems to work: (defn db-push ([key val] (db-push key val *default-db*)) ([key val db] (swap! db assoc key (cons val ('db key))))) --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---