I stumbled across this old post by Tomasz Nurkiewicz: http://www.nurkiewicz.com/2013/03/promises-and-futures-in-clojure.html
He writes: "And here is where the greatest disappointment arrives: neither future <http://clojuredocs.org/clojure_core/clojure.core/future> nor promise <http://clojuredocs.org/clojure_core/clojure.core/promise> in Clojure supports listening for completion/failure asynchronously. The API is pretty much equivalent to very limited java.util.concurrent.Future<T> <http://nurkiewicz.blogspot.com/2013/02/javautilconcurrentfuture-basics.html>. We can create future, cancel it <http://clojuredocs.org/clojure_core/clojure.core/future-cancel>, check whether it is realized? (resolved) <http://clojuredocs.org/clojure_core/clojure.core/realized_q> and block waiting for a value. Just like Future<T> in Java, as a matter of fact the result of future function even implements java.util.concurrent.Future<T>. As much as I love Clojure concurrency primitives like STM and agents, futures feel a bit underdeveloped. Lack of event-driven, asynchronous callbacks that are invoked whenever futures completes (notice that add-watch <http://clojuredocs.org/clojure_core/clojure.core/add-watch> doesn't work futures - and is still in alpha) greatly reduces the usefulness of a future object. " That was written in 2013. I think since then the community has found other ways to achieve the same goals? I'm curious what patterns have become common? Would it be correct to say that for most of the use cases where one would otherwise want a notification of completion on a Future, people nowadays instead use something like core.async or a library such as Manifold? -- 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 --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
