Much faster.
I tried the original script (with typo fixed) on 7000 lines of varying
length between 100 and 300 chars - took about 2 minutes to run. The
array version (again with typo fixed) took around 100 msec.
-- Alex.
On 06/10/2011 20:16, Scott Rossi wrote:
FWIW, I tried a quick test of Matthias's script using two fields with 5000
lines of 256 chars each. I tried using "i is not among the lines of" and "i
is not in" with identical results. Processing time was 1 min 6 secs in both
cases (Mac Intel Core2 Duo). Perhaps the array option posted is faster.
Regards,
Scott Rossi
Creative Director
Tactile Media, UX Design
Recently, Michael Kann wrote:
Matthias,
Your script should take a few seconds at most. There must be something else
going on to slow you down. If you want to post the script itself and a few
lines of data perhaps someone can figure it out.
Mike
--- On Wed, 10/5/11, Matthias Rebbe<matthias_livecode_150...@m-r-d.de> wrote:
From: Matthias Rebbe<matthias_livecode_150...@m-r-d.de>
Subject: how to compare 2 very large textfiles
To: "How to use LiveCode"<use-livecode@lists.runrev.com>
Date: Wednesday, October 5, 2011, 5:00 PM
Hi,
i need to compare two very large text files with about 5000 - 7000 lines each
with a lines size of up to 256 chars.
I need to find out if there are lines missing in either file a or file b.
What is the best way to do this with good speed?
I tried to check each line in file a and if the line is in file b.
And after that, i check for each line in file b and try to find out
if the line is in file a.
With large files it takes about 10 to 15 minutes to do the complete check.
My script looks like this
repeat for each line i in tTextA
if i is not among the lines of tTextB then put i&return after tMissingInB
end repeat
repeat for each line i in tTextB
if i is not among the lines of tTextA then put i&retrurn after tMissingInA
end repeat
Is there a better (faster) way?
Regards,
Matthias
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