Thanks Adam
(def applet (new PApplet)) -> (def ^PApplet (new PApplet)) results in
amazing speed!
And, quil certainly uses these type hints, sorry.
In this trouble, I learned the principle of using type hints for much java
method call.
Ideally I wish clojure compiler may automatically add type when using (new
...).
2014年3月29日土曜日 23時28分29秒 UTC+9 Adam Clements:
>
> Have you got type hints? If you do a java method call on something which
> isn't type hinted then clojure has to use reflection to look up a list of
> the available methods, which is slw. If however you tell it what type
> you expect it to be, it can better optimise it. So in the above code you
> would have something more like (defn draw [^Applet applet] (.line applet
> ))
>
> Look up how to turn on reflection warnings in your project and that will
> highlight all the lines which need attention.
>
> Hopefully it's as simple as that, but I would have expected quil to have
> type hints already, so possibly not...
>
> Adam
>
>
> Adam
>
>
> On Sat, Mar 29, 2014 at 6:20 AM, tamichan
> > wrote:
>
>> Hi All
>>
>> I'm writing graphic clojure code with Processing jars.
>> When I wrote heavy draw code, I found clojure code is slower than an
>> equivalent of java.
>>
>> Probably, the cause is java method call.
>> I call processing drawing method thousands times per one frame.
>> (.line applet x1 y1 z1 x2 y2 z2)
>>
>> So decrease the call count, increase draw performance.
>> Do you know anything speed up way of java method call?
>>
>> I tied quil, but it was same performance.
>> clojure version is 1.5.1
>>
>> thanks
>>
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