One use I've found for -> (though there are others I haven't come to appreciate yet) is when I have something like: (f1 (f2 (f3 (f4 x))))
which can be re-written as (-> x f4 f3 f2 f1) I find the latter expression easier to read. Kev On Dec 30 2008, 2:49 pm, wubbie <sunj...@gmail.com> wrote: > Very criptic for newbie. > What does "Threads the expr through the forms." mean? > Does it create a thread to execute? > > thanks > sun > > On Dec 29, 10:07 pm, Paul Barry <pauljbar...@gmail.com> wrote: > > > You can look up the documentation for a function/macro interactively > > from the repl: > > > 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. > > nil > > > On Dec 29, 8:27 pm, wubbie <sunj...@gmail.com> wrote: > > > > Hi all, > > > > Looking intoants.clj, I came across > > > (defn place [[x y]] > > > (-> world (nth x) (nth y))) > > > > What -> mean here? > > > > thanks > > > sun --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
