Actually, if you squint, you would indeed expect keys to return all elements with even index in a list. Similarly, values on a list should return all odd elements. That's how you make a hash: even elements become keys, odd elements become values. I can think of a couple uses cases for this DWIM behaviour that don't involve hashes...

In reply to Re: Why does 'keys' need a named hash? by vrk
in thread Why does ‘keys’ need a named hash? by ankitpati

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