thing?
key_list_by_value is a hash - you can tell by the { }.

$value is a hash key (looks like someone did a reverse() on %by_key. $key is a scalar.

$key_list_by_value{$value} is a reference to an array - hence the @{  }.

In reply to Re: Array of Hashes or Hash of Arrays by cdarke
in thread Array of Hashes or Hash of Arrays by perl@1983

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