pass-by-value

I like being able to unmarshal a json response into a typed struct. That gives me the ability to get intellisense in my IDE. Then I don't have to guess what the json response shape looks like. It also helps me prevent issues with trying to access invalid keys in the json response. This really helps when dealing with an external API.

Completely agree. Haven't met him in person. I was taking a graduate algorithms course, a few years ago, and was searching online to gain better understanding. That's when I found Erik Demaine's lecture videos online. He does a great job of explaining the material. Loved how the concepts were broken down so that they were easy to understand. Learning from someone so good and fluent with the material was also very inspiring. It motivated me to strive for solid understanding of the course. I had a good professor, but I don't think I would have understood the subject as well, had I not watched Erik Demaine's lecture videos.