I created my HoH this way, to count how many products I have by reference

for my $index2 (0..$#productarray)
{
 $Prod{$reference}->{$productarray[$index2]}++;

}

Output:
'ref261' => {                       
            'rope' => '4',
            'suit' => '1',
            'boats' => '3',
            'Gloucestershire' => '1',
             },
'ref523' => {
'pool' => '2',
            'fish' => '1',
            'polystyrene' => '1',
            },

[download]
Now I need to count how many types of products I have by ref, (eg. 'ref261' has 4 type of products), which is my problem, so far I have this

foreach my $ref (keys %Prod){
    my $hash_ref = $results{$ref};
    foreach my $ofHash ($hash_ref){
    $totaltype{$ofHash}++;
    }
}

[download]
mmmmmmh I really don’t know what am I doing!!, even I read different material, post about hashes.
Any help? Is there any easy way to access hash of hashes, to do some simple operations over the counts (add, multiply…)??, please I need some direction, maybe some previous post, links
Thanks

In reply to Count values of the inner hash? by Anonymous Monk

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