Thanks, ikegami. I'll use that.

I was initially puzzled—what is going inside those eval's? Let me see if I've puzzled it out right:

• If $ref is a reference to a hash, then %$ref will eval to something legal.
  • It's possibly an empty hash.
  • The '|| 1' assures a true value.
• If $ref is not a reference to a hash or something that can be used as a hash, then
  • an error occurs.
  • eval returns undef.
  • $@ would contain an error message if we checked it (but we don't because the undef told us all we need to know.)

Right?

throop

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