On Tuesday, July 17, 2012 7:50:10 PM UTC-4, red...@gmail.com wrote: > > if you do it as a lock, then readers must block writers (think it > through). Clojure's reference types + immutable datastructures and the > views on perception that underlay them are strongly opposed to readers > interfering with writers. > > > Why is it so? Does not the reader just get a snapshot copy of the atom state and does not care who writes to the original atom? If a lock is needed, it is only needed for a very short commit time (cannot read when a writer is committing), but not during the whole "swap!" function. That still sounds a lot better than re-try to me.
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