Augh no, future is not lazy; it's for multithreading. Try delay - it's identical to the (suspend) given by the OP.
user=> (time (def x (delay (Thread/sleep 10000)))) "Elapsed time: 0.256312 msecs" #'user/x user=> (time (force x)) "Elapsed time: 10000.19261 msecs" See also promise/deliver: user=> (def x (promise)) #'user/x user=> @x ;; will never terminate because nobody delivers x user=> (deliver x 95) #<core$promise$reify__5...@1d4f279: 95> user=> @x 95 user=> (deliver x 95) java.lang.IllegalStateException: Multiple deliver calls to a promise (NO_SOURCE_FILE:0) On Oct 20, 12:16 pm, Albert Cardona <sapri...@gmail.com> wrote: > user=> (doc future) > ------------------------- > clojure.core/future > ([& body]) > Macro > Takes a body of expressions and yields a future object that will > invoke the body in another thread, and will cache the result and > return it on all subsequent calls to deref/@. If the computation has > not yet finished, calls to deref/@ will block. > > --http://albert.rierol.net -- 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
