It's clojure's STM(Software Transaction Memory). More info at
http://clojure.org/concurrent_programming
On Aug 15, 2010, at 11:26 PM, HB <hubaghd...@gmail.com> wrote:
> Hey,
> I don't understand what "references" are.
> (ref #{})
> This creates a reference to an empty set but what is "reference" any
> way?
> Thanks for help and time.
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