One of the Perl mottos is "there's more than one way to do it". There's nothing like "the solution" - there are always other ways how to solve a problem, and they might be preferable under different conditions.
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]