When dumping self-referential structures, you need to enable $Data::Dumper::Purity = 1;

See the pod for the explaination.

Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"When I'm working on a problem, I never think about beauty. I think only how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong." -Richard Buckminster Fuller
If I understand your problem, I can solve it! Of course, the same can be said for you.

In reply to Re: Data::Dumper scalar refs undef by BrowserUk
in thread Data::Dumper scalar refs undef by bsb

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