The first major piece of code that I ever wrote was a publishing workflow management system for a major newspaper. It routed page images to presses and generated pdfs of each page in each edition of the newspaper and made pdfs of each day's newspaper editions and published them to a static website where they were archived. I was only allowed to use perl 4 to write this software and I wasn't allowed to use a database,…
What does that mean? Perl's basic OO support (using blessed hash references) was introduced with Perl 5 in 1994. I have no idea how anyone would even attempt writing OO code in Perl 4.