2013/11/19 TheAthlete <[email protected]> > > Хотя в справке по keys: > > Starting with Perl 5.14, keys can take a scalar EXPR, which must contain a > reference to an unblessed hash or array. The argument will be dereferenced > automatically. This aspect of keys is considered highly experimental. The > exact behaviour may change in a future version of Perl. > > Другими словами это экспериментальная фича.
Это о другом - keys($hash_ref), т.е без ручного разыменовывания.
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