Re^2: $_ getting clobbered by inner loop.

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Re^3: $_ getting clobbered by inner loop. by SuicideJunkie (Vicar) on Apr 09, 2008 at 17:59 UTC
Localizing $_ in a while loop would cause any changes to that variable to mysteriously be lost when you exit the while. Code should not mess around with things that are not its concern, since that would generate unintended and unexpected side effects. The while loop does not inherently use $_, so therefore it should not localize or otherwise muck up $_. The same reasoning would explain why a while loop does not automatically localize @test_files as well.	[reply]
Re^3: $_ getting clobbered by inner loop. by ikegami (Patriarch) on Apr 10, 2008 at 00:04 UTC
Because `$_` has nothing to do with `while` loops. You're looking at one specific `while` loop (`while (defined($_ = <FILE>))` when asking that question, but `while` is used in many other ways too. For example, why should Perl localize `$_` in `while (@todo)`? Or in `while (my ($key, $val) = each %hash)`?	[reply] [d/l] [select]
Re^3: $_ getting clobbered by inner loop. by Anonymous Monk on Apr 09, 2008 at 14:37 UTC
larry he is not	[reply]