I would definitely like to have such a reference because I often work with
performance-critical code which I mostly delegate to Java. I would like to
see it organized in categories for easier access, with commentaries to each
case on why is this so (for example, i would suppose that aset-int should
be faster in your example, but this is not true). As a recommendation, you
could probably use some libraries like https://github.com/ptaoussanis/timbre to
produce more sophisticated tests. Also check for existing materials like
https://www.youtube.com/watch?v=ii-ajztxALM and such..
Also, afaik, most of Clojure community seem to not be very concerned with
performance, so not everyone will be deeply interested, but I and someone
else would definitely be.
On Sunday, July 14, 2013 12:15:04 PM UTC+4, Marc Dzaebel wrote:
>
> I'm often in need of performance comparisons/recommendations about
> different ways to code the same usecases. E.g.
>
> (time(let [x 2 y [0 1 2 3 4]] (dotimes [_ 10000000] (remove *#{x}*y))))
> ;~950 ms
> (time(let [x 2 y [0 1 2 3 4]] (dotimes [_ 10000000] (remove *#(= % x)*y))))
> ;~150 ms
>
> (time(let [a (int-array 10)] (dotimes [_ 10000000] (*aset *a 1
> 2)))) ;~7 ms
> (time(let [a (int-array 10)] (dotimes [_ 10000000] (*aset-int *a 1
> 2)))) ;~430 ms
>
> I'd recommend to gather such information at a central place in a more
> systematic way. So I wonder:
>
> - where to place such information
> (Wiki?)<http://en.wikibooks.org/wiki/Clojure_Programming>
> - whether this information is of use
> - whether you have more recommendations regarding performance or the
> form, advices are presented
>
> *Thanks, Marc*
>
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