"I have no idea what "prototypes" mean with respect to Perl."

Well, I provided you with a link: "Too many arguments for subroutine". That discusses prototypes, has links to Perl's official documentation as well as other PerlMonks' discussions. It's up to you whether you read it.

— Ken

In reply to Re^9: Listing out the characters included in a character class [v5.38] by kcott
in thread Listing out the characters included in a character class by Polyglot

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