http://qs321.pair.com?node_id=11124299


in reply to Re^2: A short whishlist of Perl5 improvements leaping to Perl7 (used only once)
in thread A short whishlist of Perl5 improvements leaping to Perl7

"looks like used-only-once gets deactivated with explicit declaration"

Lexical variables and variables beginning with an underscore never trigger that warning.