in reply to Sorting on Nested Element
push @$sorted, $data->{Elements}{$_} for @pri;
Some people recommend using curly braces with dual sigils. I certainly do that with more complicated ones, but I feels it's simple enough when you say, "Take this scalar and access the array ( or hash ) it references".
As Occam said: Entia non sunt multiplicanda praeter necessitatem.
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Seekers of Perl Wisdom