I always thought that using values created a new array (as opposed to using each, which didn't), but nobody mentioned it here, so I'm guessing I'm wrong. Is this something that used to be true but now isn't (and, if so, does anybody know as of what version), or am I just totally confoozled on this one?

I like the suggestion of a tied hash, but it could be problematic if it's possible for the values to change from undef to 1 (or vice versa).

In reply to Re: Counting keys with defined or undefined elements in a hash by Oberon
in thread Counting keys with defined or undefined elements in a hash by Bukowski

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