The Perl Idioms Explained section of the tutorials immediately came to mind. Some of the "tips and tricks" (though not sure about the specific stack example) might be appropriate for that section.
(if you write one up, also mention $Array[-1] amd $Array[$#Array] in addition to $Array[0])

In reply to Re: Categorized Questions and Answers: tips and tricks by davidrw
in thread Categorized Questions and Answers: tips and tricks by GrandFather

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