in reply to Retriving data from Hash of Hashes

For this, and many other problems, there is a self-service, no-waiting option: the Monastery's library of Tutorials. In this case, look to Data Type: Hash and, especially, planetscape's fine entry.

Your search engine can help you find offsite sources such as Simon Cozens' "Hash Crash Course" and McGill University's How to Hash


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Re^2: Retriving data from Hash of Hashes
by AnomalousMonk (Archbishop) on Apr 19, 2015 at 12:26 UTC
    ... Simon Cozens' "Hash Crash Course" ...

    The code
        @popular =
            (sort { $histogram{$b} <=> $histogram{$b} } @unique)[0..4];
    in the "Counting" section should be
        @popular =
            (sort { $histogram{$b} <=> $histogram{$a} } @unique)[0..4];

    Give a man a fish:  <%-(-(-(-<

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