how to tell if hash value is null vs missing

[Collins, Joe (EDSI\\BDR)]

Consider this perl stub:

$value=$myhash{$mykey};

If the value in the hash at $mykey is "", then $value becomes "" and
if $mykey is not a valid key, then $value still becomes ""

How do I differentiate between the two?

Please email me (email address below) if you know the answer.

Thanks,
Joe
[EMAIL PROTECTED]


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