Look at how Data::Dumper does it. Essentially, you will want to use Scalar::Util's reftype() and go from there.
My criteria for good software:
  1. Does it work?
  2. Can someone else come in, make a change, and be reasonably certain no bugs were introduced?

In reply to Re: iterators: traversing arbitrary data structure by dragonchild
in thread iterators: traversing arbitrary data structure by dimar

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