See Hash::Util for the concept of 'restricted hashes'.

That said, I don't know of anyone who has used perl for more than a few weeks that feels the need to use them; nor in the 12 or 13 years since 5.8, have I encountered any code in the wild that uses them.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority". I knew I was on the right track :)
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: strict "vars" mode for hash key literals? by BrowserUk
in thread strict "vars" mode for hash key literals? by perlancar

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