I'd be happy to be corrected on this, but the documentation seems a bit... bare? I've used mypy, and I'm interested in types more complicated than `foo() -> int`. I'd like to see how pyre handles generic stuff, unions etc... Maybe that's all rolled into "we support PEP X", but it'd be nice to see some examples.
(I might have somehow missed the full docs - in that case, if anyone has a link, I'd be grateful.)