> (swap! recent-activity concat feed @recent-activity))))) > This swap! replaces the value in recent-activity with (concat > @recent-activity feed @recent-activity), approximately > Adding to Stephen's point, *swap!* passes the current atom state into the function you gave it. So the correct way would be
(swap! recent-activity #(concat feed %)) However, you also seem to be mistaking *concat* for something it isn't: string concatenation. What really happens is your string gets converted into a *sequence of individual chars* --- and yes*, *that is *very* wasteful with memory: each sequence item occupies 64 bytes (on my setup: Java 7, Clojure 1.5). String concatenation is achieved with the function *str*. -- 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
