http://www.perlmonks.org?node_id=1062422


in reply to Re: Using the DATA file handle for ARGV
in thread Using the DATA file handle for ARGV

The trick influences how the diamond operator <> works, i.e. what *ARGV{IO} does. The behaviour of @ARGV is a different story and is not related to the trick. To see it work, change the line 5 to
my $timestamp = <>;
لսႽ ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ