hi,

i'll just skip to the point:

this is my hash 

$VAR1 = {
'0000006' => [
                 47,
                 986,
                 {
                   '6' => [
                            undef,
                            8,
                            '0.0476673428',
                            '0.0000000000',
                            '0.0000000000',
                            '0.0504833512',
                            '-2.3718998111e+01',
                            '6.7559883050e-01',
                            '0.0000000000e+00',
                            '0.0000000000e+00'
                          ],
                   '4' => [
                            undef,
                            3,
                            '0.0476673428',
                            '0.0000000000',
                            '0.0000000000',
                            '0.0502136752',
                            '-2.3718998111e+01',
                            '8.6357443606e-01',
                            '0.0000000000e+00',
                            '0.0000000000e+00'
                          ],
                   '1' => [
                            19,
                            439,
                            '0.0476673428',
                            '0.0432801822',
                            '0.0452380952',
                            '0.0539499037',
                            '-1.7611636075e-01',
                            '3.3572455230e-01',
                            '2.3371924011e-01',
                            '4.6743848022e-01'
                          ],
                   '3' => [
                            'NA'
                          ],
                   '2' => [
                            22,
                            286,
                            '0.0476673428',
                            '0.0769230769',
                            '0.0833333333',
                            '0.0370370370',
                            '8.1093021684e-01',
                            '9.9753809371e-01',
                            '9.9388971159e-01',
                            '1.0000000000e+00'
                          ],
                   '5' => [
                            6,
                            249,
                            '0.0476673428',
                            '0.0240963855',
                            '0.0246913580',
                            '0.0589080460',
                            '-8.6952438185e-01',
                            '2.6721209055e-02',
                            '9.8480960134e-03',
                            '1.9696192027e-02'
                          ]
                 }
               ]
 }

[download]
and what i need to do is loop through $hash{$_}[2]{$_} (1..6) and evaluate if there is something on 9th position. something like: 
@arg{key} = (1 .. 6);

foreach my $physh (@{$arg{key}}){
    next if (!$hash{$_}[2]{$physh}[9]);
        ...
}

[download]
the problem is when i run this foreach loop the result i get is: 
$VAR1 = {
          '' => [
                  undef,
                  undef,
                  {
                    '' => []
                  }
                ],
          'GO:0000006' => [
                            47,
                            986,
                            {
                              '6' => [
                                       undef,
                                       8,
                                       '0.0476673428',
                                       '0.0000000000',
                                       '0.0000000000',
                                       '0.0504833512',
                                       '-2.3718998111e+01',
                                       '6.7559883050e-01',
                                       '0.0000000000e+00',
                                       '0.0000000000e+00'

...

the:

          '' => [
                  undef,
                  undef,
                  {
                    '' => []
                  }
                ],

is something that i don't need- it creates a problem further in the co
+de

[download]
the empty location is created whenever there is nothing on 9th position. also it has to be checked for 9th position because sometimes 'NA' doesn't mean that there is nothing on 9th position.

any ideas ??

also i'm using warnings so $hash{$_}[2]{$_} is warning me a lot , any way around it except local $^W = 0

Update:

in other words i have to clean up after myself !? :)

In reply to searching through hash values by baxy77bax

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