See perldoc perlreftut about using references.

If you have hashrefs in scalar variables (as you do, e.g., $dbids), you can loop through the values like so: 

for my $val (values %$dbids) {
# Do something with a value...

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In reply to Re: Returning and passing references to hashes by Roy Johnson
in thread Returning and passing references to hashes by mnlight

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