I'm trying to sort a hashref of arrays first by the number of elements in the array and then the total count in all elements:
snip
use List::Util qw(reduce);

my $scan = {a => [ 5, 6 ], b => [ 5, 10, 15 ], c = [ 100 ], d => [ 8, 
+9 ] };

foreach my $sip (sort { 
                    $scan->{$b} <=> $scan->{$a} or 
                    +(reduce { $b + $a } @{$scan->{$b}}) <=> +(reduce 
+{$b + $a } @{$scan->{$a}})
                  } (keys %$scan))

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Should print b, d, a, c but idk what it's currently doing.

In reply to two order sort by ag4ve

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