Re: Speeding Up Scripts 101
Re: Speeding Up Scripts 101
- Subject: Re: Speeding Up Scripts 101
- From: "Serge Belleudy-d'Espinose" <email@hidden>
- Date: Mon, 4 Mar 2002 11:28:37 +0100
At 20:18 -0800 3/03/02, Paul Berkowitz wrote:
set MyOutput to {}
repeat with i from 1 to 2000
set end of MyOutput to "some more data " & i -- or whatever
end repeat
set AppleScript's text item delimiters to {return}
set MyOutput to MyOutput as string
set AppleScript's text item delimiters to {""}
MyOutput
This remains the best technique if the list is to be created in one
loop. However, when repeatedly accessing and modifying a list, it's
much faster to put it in a script object:
--------------------------------
-- build list
set vList to {}
set vRange to 1000
repeat with i from 1 to vRange
set end of vList to i
end repeat
-- slow
-- set tStart to the ticks -- uncomment this...
repeat with i from 1 to vRange
get item i of vList
end repeat
-- fast
-- set tMiddle to the ticks -- ...and this...
script vScript
property xList : missing value
end script
tell vScript
set its xList to vList
repeat with i from 1 to vRange
get item i of its xList
end repeat
end tell
-- set tStop to the ticks -- ...and this...
-- {tMiddle - tStart, tStop - tMiddle} -- ...and this if you use Jon's Commands
--------------------------------
Serge
--
\\//\//\// Serge Belleudy-d'Espinose Institut Jacques Monod - Jussieu
// // //
http://www.ijm.jussieu.fr/ Universites Paris VI, VII - CNRS
//\//\//\\
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