And already, I see that the first one should have been
(defn test []
(async/go
(println (async/<! (foo)))))
Boy I wish you could edit this post after the fact.
On Monday, January 13, 2014 3:32:39 PM UTC-8, Stephen Cagle wrote:
>
> I just want to re-iterate that there are many (some are probably better)
> ways to do this, but using what I suggested above it would be:
>
> (defn foo []
> (async/go "hi"))
>
> (defn test []
> (println (async/<! (foo))))
>
> (defn test []
> (let [c (async/chan 10)]
> (async/go
> (async/>! c (async/<! (foo)))
> (println (<! c)))))
>
> (test)
>
> I wrote the first (test) minimally as you aren't really doing anything
> with your 10 slot buffer. However, in real code maybe you are, so I tried
> to write the second (test) in the fashion that you wrote it.
>
> There is nothing really to what I am saying other than that, yes, the
> core.async codewalker cannot see into code that you call into. Therefore,
> if the code you call into also needs to do asynchronous things, you need to
> wrap it in something like a go block as well. With the above solution you
> might have 2 go machines "live" at the same time (the test and the foo go
> machines).
>
> In short, you have a trade-off here. If you want to modularize your code
> at the function (go machine) level, you are going to potentially have
> multiple go machines "live" at the same time.
>
> I don't have an editor/compiler on this tablet, so apologies for any silly
> errors.
>
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