WAT 3 and WAT 10 were surprising for me. WAT 3 becomes less surprising when you consider that a method on a pointer can be called and can return a valid result

WAT 3 and WAT 10 were surprising for me. WAT 3 becomes less surprising when you consider that a method on a pointer can be called and can return a valid result even if the pointer is nil. WAT 10 just seems inconsistent. I said this before, and I'll say it again: shadowing does more harm than good. The rest are pretty trivial for anyone who worked with the language for over a year or read the documentation carefully.