Perl warnings and the warn function

“Warning!” by John Goodridge is licensed under CC BY-NC-SA 2.0

I men­tioned in pass­ing last week that the next major release of Perl, v5.36, is set to enable warnings by default for code that opts in to use v5.35; or above. Commemorating Perl’s 34th birth­day the week before that, I not­ed that the warn­ings sys­tem has been get­ting ever finer-grained since its intro­duc­tion in 2000. And fel­low Perl blog­ger and CPAN author Tom Wyant has been cat­a­loging his favorites over the past…