is there a definition of "thread" somewhere, and a definition of "form" somewhere?
Thanks. On Sat, Jan 31, 2009 at 10:31 PM, Jason Wolfe <jawo...@berkeley.edu> wrote: > > 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 -~----------~----~----~----~------~----~------~--~---
