As I said, Stevie's response did not work under "use strict". What finally worked is checking for the literal value of the string "HASH", which is what was printing out for me.

if (!($hh{'QUESTION_TEXT'} =~ /HASH\(/)) {

Now, I thought it printed out this value when you tried to print a hash reference that wasn't defined. I don't understand this, since the Dumper call shows the structure to be like the below:

{
'QUESTION_TEXT' => {},
'VARNAME' => 'OTHER STUFF',
},

So why does my code need to check for literally "HASH(" in the string, when the structure clearly has nothing in it?

In reply to Re^7: how to identify a null hash value by smartyollie
in thread how to identify a null hash value by smartyollie

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