I was able to do this for a regular hash with scalar values but i'm having trouble with a hash of arrays. Suppose i have a hash like: 
my %hash = (
'a' => ['1', '2'],
'b' => ['2', '3'],
'c' => ['1', '2']
);

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I want to iterate through the hash and remove the key/value pair for a or c (doesn't matter which one). The best thing i could come up with was something that identified which keys have duplicate values but i don't know how to delete all but 1.

In reply to Removing duplicate values for a hash of arrays by perlvroom

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