It's worth pointing out that if you really care about using it across
multiple threads, an atom really isn't the right tool for the job.  You
should use a ref in order to place both the first and the rest into a
single transaction:

(defn make-blah [v]
  (let [a (ref v)]
    (fn [] (dosync (let [x (first @a)] (alter a rest) x)))))



On Thu, Dec 5, 2013 at 12:24 PM, David Simmons <shortlypor...@gmail.com>wrote:

> Hi Puzzler
>>
>
> I like the first approach you defined and it works perfectly thank you.
>
> cheers
>
> Dave
>
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