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  1. or download this
     $ perl -MData::Dump -e " my@f=1..3;my@g=4..6;push@f,\@g;push@g,@f;dd\
    +@f,\@g; "
    do {
      my $a = [1, 2, 3, [4, 5, 6, 1, 2, 3, 'fix']];
      $a->[3][6] = $a->[3];
      ($a, $a->[3]);
    }
    
  2. or download this
    @data1 = (
           'one',
           'won',
    ...
           ]
         );
    @data2 = @{$data1[2]};