Perl will only autovivify the anon. array if the value of the array element is undefined. if it has any value that would test as defined, including '' & 0, it will issue a warning.

Actually, perl will die, not issue a warning:

Can't use string (""%s"") as %s ref while ""strict refs"" in use

(F) Only hard references are allowed by "strict refs". Symbolic references are disallowed. See the perlref manpage. - perldiag

That (F) means A fatal error (trappable), i.e. die.

Programmer beware.

--
3dan

In reply to Re: Re: push undefined and vivification by edan
in thread push undefined and vivification by oha

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