I probably spent even less time passing Discrete Math 2 at WGU. However, that was largely because I had fully embraced that I would never graduate from a university and had to learn on my own, so the year prior I had read some books on proofs, probability, and statistics. I have notes and flashcards, I really studied, never expecting school credit. I had also encountered combinatorics and such in grade school and other math classes over the years. Discrete Math always seemed like "programmer's math" to me, in contrast to Calculus, and being a programmer it felt easier.
We don't know a lot about what the author was doing outside of school, but we know he was serious about self improvement - he wasn't just putting in hours at work and collecting a paycheck. It sounds like he's completed some impressive programming projects, he attends meetups, keeps a blog, uses Linux, hates Windows, learned to like Windows anyway, ported a Windows UI library to Android and iOS, speaks multiple languages, has attended multiple universities in the past, etc. I think there is a good chance that "he already [knew] most of it".
We don't know a lot about what the author was doing outside of school, but we know he was serious about self improvement - he wasn't just putting in hours at work and collecting a paycheck. It sounds like he's completed some impressive programming projects, he attends meetups, keeps a blog, uses Linux, hates Windows, learned to like Windows anyway, ported a Windows UI library to Android and iOS, speaks multiple languages, has attended multiple universities in the past, etc. I think there is a good chance that "he already [knew] most of it".