Or even just:

use warnings;
use strict;

my $array_ref = [
    [ '0.93', 'a1', 'b1' ],
    [ '0.89', 'a2', 'b2' ],
    [ '0.88', 'a3', 'b3' ],
    [ '0.87', 'a4', 'b4' ],
    [ '0.86', 'a5', 'b5' ]
];

for my $row (@$array_ref)
{
  for my $element (@$row)
  {
     print $element, "\n"; # using say, or setting $\ locally would wo
+rk as well
  }
}
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You often have no need to know the indexes when looping through an array. And since an array begins with index 0, you would skip the first element with : for ( 1 .. $#$val ) UPDATE: which is done on purpose, my bad \o/