Hi, On Aug 21, 8:34 am, gutzofter <gutzof...@gmail.com> wrote:
> (defmacro macro-hello [] > `"hello") > > (defn -main [] > (println (eval '(= 0 0))) ;works > (println (eval '(com.yourcompany.defpackage/macro-hello))) ;works > (println (eval `(macro-hello))) ;works > (println (eval '(macro-hello))) ;does not work > ) > > seems that backquote resolves namespace while quote doesn't. > > Can you point me in the right direction concerning backquote and > quote? http://clojure.org/reader My suspicion is, that the macro call is done by `eval` in the clojure.core namespace, not the namespace of your file. The ` resolves the symbol to `com.yourcompany.defpackage/macro-hello` which will also work in the clojure.core namespace, since it is fully qualified. ' does not resolve the symbol and since clojure.core doesn't have a `macro-hello`, you get the error. For real-life use, you should only use `. ' is only useful for well- defined DSLs, but not for macros. (read: hygiene) Avoid `eval`. It will come back to haunt you. Sincerely Meikel --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
