Straight from the horse's mouth (perldoc -f defined):

Use of "defined" on aggregates (hashes and arrays) is deprecated. It used to report whether memory for that aggregate has ever been allocated. This behavior may disappear in future versions of Perl. You should instead use a simple test for size

HTH...

In reply to Re: Testing for definition of references by jsprat
in thread Testing for definition of references by DBX

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