On Thu, Nov 26, 2009 at 2:11 AM, Christophe Grand <christo...@cgrand.net>wrote:
> On Thu, Nov 26, 2009 at 8:05 AM, Robert Campbell <rrc...@gmail.com> wrote: > >> If you have this: >> >> user> (def f (future (Thread/sleep 20000) :done)) >> #'user/f >> user> @f ; this immediate deref blocks for 20 sec, finally returning >> :block >> :done >> user> @f ; returns immediately >> :done >> >> What is actually happening when you call the first @f? You are waiting >> for the function to finish executing and return a value? Or are you >> waiting for a return value to appear in the ref slot? >> >> Is there any way to check if there is a value ready or if the function >> has returned w/out blocking? >> > > future-done? > Why isn't this on the api page? -- 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
