in reply to Loop Through Files and Update Headers
Crossposted to reddit. Next time, please, inform about crossposting to avoid unnecessary work of hackers not attending both the sites.
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]
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Seekers of Perl Wisdom