On Jan 31, 7:09 pm, wubbie <sunj...@gmail.com> wrote: > Hi, > > I saw in ants.clj a notation (->). > what is it? > For example, > (defn place [[x y]] > (-> world (nth x) (nth y)))
Did you check the docs? On the website: http://clojure.org/API#toc21 Within clojure itself: user> (doc ->) ------------------------- clojure.core/-> ([x form] [x form & more]) Macro Threads the expr through the forms. Inserts x as the second item in the first form, making a list of it if it is not a list already. If there are more forms, inserts the first form as the second item in second form, etc. Also: user> (macroexpand '(-> world (nth x) (nth y))) (nth (clojure.core/-> world (nth x)) y) --~--~---------~--~----~------------~-------~--~----~ 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 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 -~----------~----~----~----~------~----~------~--~---
