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Perl is a dynamic language and this kind of static typing with compile time checking belongs to Java or Haskell.
Theoretically you could do runtime checking by replacing your function with a wrapper in the middle checking The wrapper could be installed by an attribute. But I doubt the outcome justifies the effort, cause it'll come with notable performance loss for an unusual case. You should rather question your strategy if you're passing around too many positional parameters. Smells a bit like an XY problem...
In reply to Re: Checking number of values returned
by LanX
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