Somewhat OT, I can't believe I'll end up dropping out of college before I take a class with Ierusalimschy. I've been told he will usually wear a bermuda and flip flops to class but unfortunately those are few and far between for undergrads, only Compilers that I've heard of, while most of his work is with grad school.
As someone that has recently moved to Rio, I have to confess I'm baffled at how people manage to not wear a bermuda. Its so hot here!
Other then that, I think he gives some lectures on semantics every once on a while. The compilers class is only rarely offered since so few people take it :/
Try again next semester. Taking compilers is mandatory for comp. sci students, so they will have to bite the bullet and take it eventually, even if scared of Roberto (somewhat with reason; the course is easier than Coursera's Compilers course, but still a hard course for the undergrads).
