Ah forgot that the core.async folks mentioned that if you want performance
its best to use real threads.
(time
(let [c (chan 100)]
(thread
(dotimes [i 100000]
(>!! c i))
(close! c))
(prn (<!! (thread (loop [i nil]
(if-let [x (<!! c)]
(recur x)
i)))))))
finishes in about 100ms which seems reasonable, just can't have too many of
those threads open.
On Fri, Nov 29, 2013 at 5:40 PM, Sean Corfield <seancorfi...@gmail.com>wrote:
> On Fri, Nov 29, 2013 at 1:09 AM, Thomas Heller <th.hel...@gmail.com>
> wrote:
> > I'm actually surprised you get to "stop" at all. You send a couple items
> > onto the channel but don't close it, therefore the 2nd go block will
> > potentially block forever waiting for more.
>
> Indeed. When I tried Andreas' code in the REPL, it didn't terminate.
>
> > I'm far from an expert in core.async but I think the solution would be to
> > close! the channel and as a suggestion: (go) blocks themselves return
> > channels that "block" until they are completed. You could write this as:
>
> Your code completes in around 330ms for me.
> --
> Sean A Corfield -- (904) 302-SEAN
> An Architect's View -- http://corfield.org/
> World Singles, LLC. -- http://worldsingles.com/
>
> "Perfection is the enemy of the good."
> -- Gustave Flaubert, French realist novelist (1821-1880)
>
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