Concerning your first question, the output you get is exactly what I was expecting when reading the code. While I can't really think of any use for such a strange construct, clearly the local keyword modifies the hash to be "local" to the enclosing do block. So that the code populates each time a local copy of %h and retrieves a reference to this local copy of the hash and assigns this reference to $x and $y. As soon as the code leaves the do block, the value of the hash is reset to its original empty value.

I may be wrong, but I can't see why it wouldn't be safe to do that. And I don't even think it is magic.

Or did I perhaps miss something about your concerns?


In reply to Re: Referencing localized variables, and typeglobs by Laurent_R
in thread Referencing localized variables, and typeglobs by haukex

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