Nice! I knew there had to be a better way. Regarding problem 1, what exactly does ->() do? I know that without it, a coderef would be returned, and with it, the result is returned. But how does it work? Does it evaluate the sub on the spot or in the moment I access $hash_has_non_undef?

In reply to Re: •Re: One liner to Check and undef hash elements by crenz
in thread One liner to Check and undef hash elements by Anonymous Monk

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