Re^2: Retrieve unique values from Hash of Hashes

There's a bug in my code. You seem to imply the bug is simply my choice of array name. I disagree. If that's the bug, we have redundant code ($HoH{$_}{user}). And simply put, it makes no sense to end up with a bunch of IP addresses when looking for unique users.

My code should have been

my %seen;
my @unique_users =
    grep !$seen{$_}++,
    map $HoH{$_}{user},
    keys(%HOH);
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