Can lineOffSet find last occurance?
kray at sonsothunder.com
Fri Aug 30 13:56:01 EDT 2002
----- Original Message -----
From: "Bill Vlahos" <bvlahos at jpl.nasa.gov>
To: <use-revolution at lists.runrev.com>
Sent: Friday, August 30, 2002 1:23 PM
Subject: Can lineOffSet find last occurance?
> I need to process a subset of lines in a field which has been sorted.
> All of the group of lines I want are together because of the sort. What
> I'm doing now is using a repeat for each line command and checking each
> line to see if it contains what I'm looking for. This works fine but
> will eventually slow down with big data sets. I would like to use the
> repeat for each feature which includes the starting and ending lines.
> The lineOffSet command neatly finds the first line of what I want but
> how can I find the last line? Can lineOffSet be made to start and the
> I could leave the check for what I want and exit the handler after
> starting at the offset but it should be faster if I could remove the
> check. I am confident that the sorting will put what I want together.
> Another option would be to put the field into a variable and then
> filter the variable and do the processing on what remains. I don't know
> how much of a performance hit the putting and filtering would be. This
> lineOffSet command seems pretty fast.
> Bill Vlahos
> use-revolution mailing list
> use-revolution at lists.runrev.com
More information about the Use-livecode