To my initial surprise, the code above printed "We have a hash reference.", even though the hash I've referenced is empty ( ie: no keys and no values ).

No matter how many keys it hash, it's still a hash. ref(\%hash) returns HASH, which is a true value. if (%$hash_ref) will tell you if the referenced hash is empty or not.

In reply to Re: Truthfulness of references by ikegami
in thread Truthfulness of references by njcodewarrior

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