I guess we just don't know how the engine does these things...but
it's interesting to know that getting the short name from the
fileName is much quicker than from the long ID.
Best,
Mark
On 18 Apr 2006, at 17:02, David Burgun wrote:
On 18 Apr 2006, at 16:29, Mark Smith wrote:
I time things like this by putting them in a loop:
put the millisecs into stTime
repeat 10000 -- for example
put the short name of this stack into myStackName
end repeat
put the millisecs - stTime
on my machine, this takes 11 millsecs.
But where the engine seemed slower than string slicing, I was
passing the long id of an object to a function, and in that case,
parsing the ID seemed to be quicker than 'get the short name
of..', by a factor of 3 or 4. Obviously, this would only matter if
you were doing something many thousands of times, but you said you
were concerned about it being slow... :)
Yes, I am! This is called in a loop and I really want to get he
maximum speed out of it
I just ran the following code:
constant kRepeatCount=10000
on mouseUp
local myStartTime
local myEndTime
local myStackName
local myShortNameTime1
local myShortNameTime2
local myShortNameTime3
local myRepeatTime
local myStackLongID
local myStackFileName
--
-- Calculate the time for just the repeat loop
--
put the millisecs into myStartTime
repeat kRepeatCount
end repeat
put the millisecs - myStartTime into myRepeatTime
--
-- Calculate the time for getting the short name of this stack
--
put the millisecs into myStartTime
repeat kRepeatCount
put the short name of this stack into myStackName
end repeat
put the millisecs - myStartTime into myShortNameTime1
put the long id of this stack into myStackLongID
put the millisecs into myStartTime
repeat kRepeatCount
put the short name of myStackLongID into myStackName
end repeat
put the millisecs - myStartTime into myShortNameTime2
put the fileName of this stack into myStackFileName
put the millisecs into myStartTime
repeat kRepeatCount
put the short name of stack myStackFileName into myStackName
end repeat
put the millisecs - myStartTime into myShortNameTime3
put myRepeatTime && myShortNameTime1 && myShortNameTime2 &&
myShortNameTime3
end mouseUp
The figures I got are as follows:
1 7 58 12
so it looks like dereferencing the stack long ID is taking a really
long time in comparison with getting the stack short name via the
"this stack" syntax (which is what I guessed), but I was a bit
stunned that doing it via the file name is way quicker than using
the long id.
Weird, huh?
All the Best
Dave
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