Warren Kuhl wrote:
I have a variable that has approx 100,000 records (loaded from a text file).
I need to read through each record and extract items from each record.
I am currently using:
Repeat with x = 1 to tRecordCount
Put item 2 of line x of tData into tItem2
Put item 6 of line x of tData into tItem6
...process data
End Repeat
I find this very slow to process. Is there a fast way to process through the
data?
The "repeat with..." construct will be slow when using the iteration
variable to access the data, because each time through the loop it needs
to count from 1 to x to find the line in question.
You should see at least an order of magnitude performance gain using
"repeat for each...", e.g.:
repeat for each line tLine in tData
put item 2 of tLine into tItem2
put item 6 of tLine into tItem6
...process data
end Repeat
With "repeat for each", the engine parses the data as it goes, putting
each line as it finds it into tLine, and keep track of where it is so
the next time through the loop it just picks up where it left off.
Much, much faster.
--
Richard Gaskin
Fourth World
Revolution training and consulting: http://www.fourthworld.com
Webzine for Rev developers: http://www.revjournal.com
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