Yep, this was the fast solution to the "and" problem ;-). Best
strategy to adopt then is to first sort the search items by length.
Then run your repeat loop from longest to shortest. If lucky, you
will only have 1 or 2 items left in your file list. What matters then
is the size of your list of words to search for rather than the size
of the original list of files.
I was not quite sure to understand the use of your vNewContainer
variable. Filter will directly act on your variable such that only
the lines that the filter let go appear in the new list. So, in fact,
you could code it this way and as with the strategy outlined above,
if lucky after the first repeat, vNewContainer wlll be very small.
put vContainer into vNewContainer
repeat for each item thisItem in vInputStrings
filter vNewContainer with ("*!*" & thisItem & "*!*")
end repeat
...do something with vNewContainer
Thanks to both Jim and Marielle for their awesome feedback.
Instead of
asking specific questions about the details of your feedback, I
want to
ask a general performance question. The filter does work within a
repeat loop like this:
repeat for each item thisItem in vInputStrings
get vContainer
filter it with ("*!*" & thisItem & "*!*")
put cr & it after vNewContainer
end repeat
...do something with vNewContainer
But given that vInputStrings could be very large, my concern is
that the
getting and putting involved would be dangerously memory- or
processor-intensive. What are the risks you have seen with the brute
force approach like the one above?
Mark
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Mark
Powell
Sent: Wednesday, October 25, 2006 10:04 AM
To: [email protected]
Subject: Multiple arguments with the filter command
Another text filtering question, please. I have studied the archives
but have not found precisely the solution that works.
I have a container vContainer of file names, each line of the form
<directory>/!?!<filename>!/<filesize>/<creationdate>
Here are three literal examples:
C:/The World/Asia/!?!prologue.ps!/1026/1115309596
C:/The World/Europe/!?!Map of Europe.jpg!/3536844/1155845730
C:/The World/!?!About1953.txt!/4288/1161776573
User-input text strings can define what files from vContainer are
to be
retained. The following works to filter-in the first example above:
filter vContainer with ("*!*.ps*!*")
However, if the user wants both ".ps" and "Europe" to be retained, how
best to do it without repeat loops and a lot of temporary copies of
vContainer? Is there a way?
One catch is that if the user inputs something like "53", the
operation
must recognize the fact that the "53" in the first two examples is
not a
part of the file name, thereby filtering them out, but that "53" is a
part of the file name in the third example, thereby filtering it in.
This is one reason for the exclamation point tokens in vContainer.
Any ideas greatly appreciated.
Mark Powell
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------------------------------------------------
Marielle Lange (PhD), http://widged.com
Bite-size Applications for Education
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