I have a hash of hashes that looks like this: 

my %products (
    1 => {
        name      => "Floor Wax",
        wholesale => "50.00",
        retail    => "75.00",
    },
    2 => {
        name      => "Paper Towel",
        wholesale => "20.00",
        retail    => "40.00",
    },
    3 => {
        name      => "Hand Soap",
        wholesale => "30.00",
        retail    => "65.00",
   },
);

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I can sort and print this hash by the keys using the following: 
foreach my $key (sort {$a <=> $b} keys %products) {
    print "<br>K|$key| N|$products{$key}{name}| W|$products{$key}{whol
+esale}| R|$products{$key}{retail}|";
}

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How would I sort %products by the name or wholesale of each product? I have tried many variations of this to no avail. 
foreach my $key (sort {$products{retail}{$a} <=> $products{retail}{$b}
+ keys %products) {
    print "<br>K|$key| N|$products{$key}{name}| W|$products{$key}{whol
+esale}| R|$products{$key}{retail}|";
}

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I have read the hash of hashes section of the camel many times. Am I missing something obvious here or should I be transforming this into another data structure before printing.

mr greywolf

Originally posted as a Categorized Question.

In reply to How do I sort a Hash of Hashes? by greywolf

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