http://www.perlmonks.org?node_id=598891


in reply to Re: Constant names come into conflict with Perl style?
in thread Constant names come into conflict with Perl style?

"There is nothing that says that your constant subs have to have all upper case names."

That's true, there's nothing that says it, but if you grep your /usr/lib/perl5 for 'use constant', you will see that the overwhelming majority of constant names are upper-case.