Monte Goulding wrote:

> I never said it wasn't loaded into memory. I know it is and it
> didn't make sense to me at the time that there would be such a
> performance difference. Maybe it was something to do with
> resolving the filename? I'm not sure, I just know it was slower.

There's probably some nuance I'm missing - here's a quick test which first uses the fileName of a stack to access a property, then the next run it opens the stack and gets the property by referring to the stack's short name (FWIW, I had saved the stack previously with its destroyStack set to true to try to maximize any load difference):


on mouseUp
  put 10000 into n
  put fld "file" into tStackFile
  --
  put the millisecs into t
  repeat n
    put the uTest of stack tStackFile into r1
  end repeat
  put the millisecs - t into t1
  --
  put the millisecs into t
  toplevel tStackFile
  put the short name of stack tStackFile into tStack
  repeat n
    put the uTest of stack tStack into r2
  end repeat
  close stack tStackFile
  put the millisecs - t into t2
  --
  put t1 && t2 &&(r1=r2) into fld "r"
end mouseUp

Result:  151 140 true

The difference is small even across 10,000 iterations, and can be explained by the need to resolve the path to a stack reference.

How can this test be modified to show a greater difference?

--
 Richard Gaskin
 Fourth World
 LiveCode training and consulting: http://www.fourthworld.com
 Webzine for LiveCode developers: http://www.LiveCodeJournal.com
 LiveCode Journal blog: http://LiveCodejournal.com/blog.irv
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