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  1. or download this
    #!/usr/bin/perl

...
use Data::Dump 'dd'; dd 'fooarray', \@fooarray;
use Data::Dump 'dd'; dd 'bararray', \@bararray;
use Data::Dump 'dd'; dd '@ARGV after', \@ARGV;
  2. or download this
    (
  "\@ARGV before",
...
("fooarray", [123, 789])
("bararray", [456])
("\@ARGV after", ["something", "extra"])