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Re^3: Open a directory and recursively process files

by blue_cowdawg (Monsignor)
on Jan 09, 2013 at 20:31 UTC ( #1012567=note: print w/replies, xml ) Need Help??

in reply to Re^2: Open a directory and recursively process files
in thread Open a directory and recursively process files

      I tried your sub, but it still does not work. ".:Permission denied at line 16." Which is open FIN,"< $fname" or die "$fname:$!"; Any idea why this happens?

If you read the diagnostic carefully you'll notice it complains about the filename "." which is actually your current working directory. You forgot the line

next if ($file eq '.') || ( $file eq '..');
just prior to the call to the sub. I think I mentioned that a few answers ago...

Peter L. Berghold -- Unix Professional
Peter -at- Berghold -dot- Net; AOL IM redcowdawg Yahoo IM: blue_cowdawg

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[erix]: then you might as well send that patch to the DBIC guys :)
[Corion]: erix: Yeah, I just found that it has no documentation at all on how to circumvent/ eliminate "1+n SELECTs" by building a local hash... I guess I have to make ->has_many do the hash lookup instead of doing the SQL query. But as the problem ...
[Corion]: ... has only manifested itself so far through the puzzled questions of other bystanders, I won't go deeper at this time. But the DBIx::Class documentation could well do with a document on how to make "it" (that is, ORMs in general) faster ;)
[Corion]: I find that DBIx::Class, like most ORMs makes things easy until they become performance critical and then makes it horribly hard to change things because the design is highly inflexible if you don't already know about the problems of 1+n :-/
[choroba]: that's why I don't like similar libraries. They pretend you don't have to learn SQL, but in the end, you have to learn how SQL plus to overcome their own limitations
[Corion]: "Just write the proper SQL beforehand" is of course the appropriate solution, but if you did that, you wouldn't/couldn't use DBIx::Class either. At least not in an obvious (to me) way.
choroba scratches a "how"
[Corion]: choroba: Exactly... But maybe that's just because I'm old and grumpy ;)
[Corion]: But maybe that could also be a nice talk, how to restructure your DBIx::Class-based app to remove 1+n-style query patterns

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