Stack Level Local/Globals

[Eric Chatonet]

Hi Dave,

I am sure you are right but I was thinking in a practical way.
Most globals are not hundreds of elements.
Often a Boolean value is enough (at the very worst a dozen of lines).
Then it does not seem *practically* significant if it takes 20/1000  
of 1 millisecond instead of 1/1000 of 1 millisecond :-)

Here is a tiny test I have just made:

on mouseUp
   global gTest
   put true into gTest
   put the milliseconds into tStart
   repeat 1000
     put gTest into temp
   end repeat
   put the milliseconds - tStart
end mouseUp

 > 1 millisecond for 1000 loops

on mouseUp
   put the milliseconds into tStart
   repeat 1000
     put the uTest of me into temp -- contains "true"
   end repeat
   put the milliseconds - tStart
end mouseUp

 > 15 milliseconds for 1000 loops.
Very bad indeed but in fact not at all significant ;-)

Le 4 juil. 05 à 22:59, Dave Cragg a écrit :

> Eric, my own testing shows that accessing custom properties is  
> significantly slower than accessing globals. (Over 20 times slower  
> in a simple test.) When I have to refer to custom properties  
> frequently (for example when going through hundreds of elements of  
> a customPropertySet), I usually copy them to a variable first. But  
> perhaps the access times vary by circumstances.

Best Regards from Paris,

Eric Chatonet.
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