if (($file ne ".") or ($file ne ".."))

[download]

Will always be true, because no single value of $file can ever match both "." and "..". So yes, you are missing a fundamental aspect of logical operations.

Namely: For a given A != B, (!A or !B) == !(A && B), which will always be true for any single value.

Update:
Perhaps you should spend some time reading this article.

In reply to Re: This is why Perl is so frustrating by jrsimmon
in thread This is why Perl is so frustrating by eggmatters

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