On Jul 20, 2006, at 7:27 PM, John Miller wrote:
put 50 into XX
put the ticks into timer
repeat until listXX is empty
put line 1 to XX of listXX into listYY
delete line 1 to XX of listXX
repeat with x = 1 to (number of lines in listYY)
doaction to line x of listYY
end repeat
end repeat
put the ticks - timer
You'd almost certainly get even better performance with repeat for
each. The problem with any loop where you are repeatedly getting line
N is that the more lines there are, the longer it takes to get the
last ones because you have to count through all the previous ones.
Breaking it up into chunks of 50 (as you did above) improves the
situation, but doesn't fix it. Throw a large enough list at it and it
will choke. Repeat for each takes each line in turn, so it never has
to re-count through the list. A list twice as long with take twice as
long, no matter how big the lists get.
Here's an example:
repeat for each line L in listXX
doaction to L
end repeat
If you need to know the line number as you go along, then use this:
put 0 into tLineNumber
repeat for each line L in listXX
add 1 to tLineNumber
doaction to L
end repeat
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