http://www.perlmonks.org?node_id=551975


in reply to Re^2: Perl Golf 101
in thread Perl Golf 101

As you point out, $* converts numerical values to int. $= is similar except that it converts everything to int. $- is the same as $= except it can't go negative, or higher than INT_MAX. ($= seems to be able to go up to UINT_MAX.)