I updated my post above:
re: Also of note is that in Perl, a string that looks like a number is still a string until used in a numeric context. Feel free to suggest alternate wording for this sentence.

These leading zero situations can happen when reading DB files of various formats, say from a split() or whatever.

In reply to Re^4: Numification of strings by Marshall
in thread Numification of strings by LanX

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