It's very hard to know everything. I made a programming language and I'd be screwed without the manual to refer to. Recently I was utterly surprised by something that was implemented ("you can do that?").
What was it ... aha, I remember: introspection over exception handling sites. The ability to just get a list of the frames through an API, and then directly pick one and jump to it (regardless of whether it catches the type of exception being passed to it that way).
What was it ... aha, I remember: introspection over exception handling sites. The ability to just get a list of the frames through an API, and then directly pick one and jump to it (regardless of whether it catches the type of exception being passed to it that way).