people say, “you don’t know what you are talking about.” I’m not quite sure how you conclude that. The absence of source-code in a post?

No, the inclusion of “Perl source code” that has (as already pointed out by Eily):

• C++ comments
• postfix modifier syntax with the unless first
• declares scalar $record yet uses hash %record
• $record == {} checking if the hash in $record has the same address/ID as a brand new, and different hash.