Maybe an easy solution: wrap the first future in another future that blocking-derefs, then performs your extra computation? Do an extra 'realized?' check for the optimization you mention. That would still consume threads in the case that it's not realized, but I think it gets you what you want.
On Thu, May 30, 2013 at 5:09 AM, Mark Engelberg <mark.engelb...@gmail.com>wrote: > According to this article, Clojure does not yet have this facility: > http://java.dzone.com/articles/promises-and-futures-clojure > > This is something that is being worked on and discussed, though: > http://dev.clojure.org/display/design/Promises > https://groups.google.com/forum/#!topic/clojure-dev/7BKQi9nWwAw/discussion > http://dev.clojure.org/display/design/Async+blocks > > I've been hearing a lot about Tellman's lamina library as a rich Clojure > toolset for working with asynchronicity. I haven't had a need for it > myself, but you might want to check it out and see if it has relevance to > what you want to do. > > -- > -- > 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/groups/opt_out. > > > -- -- 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/groups/opt_out.