Any ideas?

An explanation of what problem you're trying to solve would be helpful

At first look (at this late hour), the way that hash is populated/used look kinda silly and poinless :)

Perl will hapilly reuse reference addresses ... since the hash keys are strings, as soon the references are gone, their refaddr's are free for reuse by perl

If you want unique keys you're better off using a UUID or some such like Session::Token - Portable, secure, efficient, simple random session token generation that satisfies those OWASP recommendations

In reply to Re: Allocation of anonymous arrays (ref addr) by Anonymous Monk
in thread Allocation of anonymous arrays by OwlHoot

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