Greetings, Suppose that I create a function that is designed to receive a map as a parameter:
(defn add-ten [m] (+ 10 (:amount m))) but then later I want to make this function part of a protocol (defprotocol AddTen (add-ten [this])) but I still want it to work when someone passes a plain map to add- ten. The only thing that I can think of would be the following: (extend-protocol AddTen clojure.lang.IPersistentMap (add-ten [this] (+ 10 (:amount this)))) It feels wrong to refer to clojure.lang.IPersistentMap as if I am relying on an implementation detail. Is there a better way to do this? I'm in the middle of writing blog post about protocols (in order to improve my own understanding of them) where I try to illustrate the point that you can code against maps then switch to protocols and records without changing the caller's contract. Thanks for your help, Brenton -- 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
