That code collides with your explanation of the data structure in 987336. Only one can be correct.

In the constructor I see you initialise the field _counts with a hash reference. Where do you now get a scalar reference from?

It would help if you dump $self before sorting, so we can see what the data structure really looks like. 

use Data::Dumper; print Dumper $self;

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In reply to Re^3: Hash value sorting by daxim
in thread Hash value sorting by iHutch105

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