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Submitted by Anonymous (not verified) on Sat, 2004-11-06 09:24.
This is really very inperformant. For each data record out of test.txt he opens one or four files (depending on a search in the first one), walks through them until there is one matching record and closes them. This seems to be a kind of JOIN for csv files. I wonder if this was done intentionaly, because as someone already noted he doesn't seem to be a beginner.