You ask max_by for the maximum of the subhashes' values ($subhash->{$_} will return the value, in your case always "1"). A simple List::Util::max should suffice.

In reply to Re: Using List::UtilsBy to print max and min values from a hash of hashes by soonix
in thread Using List::UtilsBy to print max and min values from a hash of hashes by Izzy_Murph

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