On Sat, Jan 22, 2011 at 2:09 PM, rb <raphi...@gmail.com> wrote:
> I'm not sure dataflow variables are available in clojure though, but
> would be happy to stand corrected (I heard about the contrib dataflow
> module, but from what I read it's more like cells updating based on
> upstream cells it depends on, whereas what I mean by dataflow variable
> is a variable that makes a thread wait until it gets bound if that
> thread uses that variable)

There's promise and deliver:

user=> (def foo (promise))
#'user/foo
user=> (.start (Thread. #(do (Thread/sleep 10000) (deliver foo 42))))
nil
user=> @foo
<nothing happens for several seconds>
42
user=>

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