Joachim De Beule writes: > (defmacro my-defrecord [name [& fields] & body] > `(defrecord ~name ~fields > MyProtocol > (do-something [this] this) > ~@body)) > > But then when I call > > (my-defrecord R [content]), > > which expands into the following (valid) code: > > (defrecord R (content) tmp-protocol (do-sth [this] this)), > > Then I get the RunTimeException "No such var: this"? Any ideas?
For a detailed explanation, see this: http://onclojure.com/2010/02/23/generating-deftype-forms-in-macros/ As for solutions, the preferred one is (defmacro my-defrecord [name [& fields] & body] `(defrecord ~name ~fields MyProtocol (do-something [this#] this#) ~@body)) but you can also try (defmacro my-defrecord [name [& fields] & body] `(defrecord ~name ~fields MyProtocol (do-something [~'this] ~'this) ~@body)) if for some reason you want the argument of do-something be called exactly "this". Konrad. -- 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
