You can also write it Go style if you prefer; we started off with exactly that, then moved to a macro, then turned that macro into ?.
That all being said, none of that feels very Go-like, so it makes sense that they haven’t followed what we did.
If you're only familiar with macros from C or C++ take a look. The basic idea is that your macro fictions don't use input text and output text. Instead they accept an Abstract Syntax Tree and return a known AS THE. That way the expansion plays well with the grammer.
It also manages separate variable scopes well. You only get bleed if you want it.
I used to shudder at the thought of macros but I'm convinced. Java or Go could use them reasonably I think.
I'm not a rust programer so my understand is probably a little wrong. I'm not intimately familiar with all of the details. Correct me if I'm mistaken!
Interesting. Does the Rust book (you wrote), explain the difference between the Go style and the current Rust style, and explain how to use the Rust style (well)?
Asking because I've found this Some / None stuff (also there in other languages like F#) a little tricky to understand (although I have not spent a lot of time on it yet).
