Using grep on undefined array

[Yitzchak Scott-Thoennes]

On Wed, Aug 14, 2013 at 11:26 AM, James Laver <james.laver at gmail.com> wrote:
> perlglossary is wrong. It doesn't only occur as an lvalue but can
> occur by access as well.

Yes and no.

autovivification in general applies in writish kinds of context, but
that is a somewhat imprecise concept.

Note that keys() can be in lvalue context (allowing you to set the
hash bucket size); it just so happens that keys always puts a hash
dereference argument in lvalue context whether or not keys itself is;
perlglossary is quite correct in terms of the context applied to the
dereference itself.