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  1. or download this
    use strict;
    use warnings;
    ...
    my @a  = ( +FOO, FOO);
    
    print(Dumper(\%h1, \%h2, \@a), $h2{+FOO}, "\n");
    
  2. or download this
    $VAR1 = {
              'FOO' => 'the value',
    ...
              'the FOO key'
            ];
    the value