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Re^3: Is this the most elegant way to code directory lookup?

by hv (Parson)
on Oct 02, 2006 at 10:18 UTC ( #575858=note: print w/replies, xml ) Need Help??

in reply to Re^2: Is this the most elegant way to code directory lookup?
in thread Is this the most elegant way to code directory lookup?

Update: Looks like I'm wrong.

I disagree: just because someone tried it once and got a useful error message doesn't change the fact that $! is not documented to be defined at this point.

$! may well get set differently (or not at all) in different circumstances, when testing different files, or on a different O/S, or depending on phase of the moon for all we know.

Your suggested clearer error messages are definitively more correct; the only change I might make (at the risk of getting too clever) is to avoid the duplication with something like:

die "$_ is not a valid directory\n" for grep !-d, $srcdir, $destdir;


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[Corion]: I think I should define a set of (say) five projects through which I rotate from time to time, just to prevent myself from being bored/annoyed by the problems they get stuck in ;)
[marto]: Corion, not bringing the kids would make it ideal :P
[marto]: a suggestion, have one project in the list that isn't programming/perl related
[Corion]: marto: Yeah, things are more parent-friendly the way they are ;))
[marto]: some hardware/makey thing
[Corion]: marto: Ah, I'm currently drifting to that again, over"painting" (well with Inkscape) one of my photographs and thinking about vectorizing some other images ...
[marto]: Corion, yes something 'artistic', so that or some music. Even combine some things, build a musical instrument :)
[Corion]: marto: Naah, I'm avoiding that rabbit hole ;) Sometimes I think of using Perl to create MIDI to generate music, or at least the harmonies to which I could jam, but then that would eat even more into available time ;-))

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