[kwlug-disc] On Rust

[Mikalai Birukou]

The song: https://www.youtube.com/watch?v=04I_dPHFd7I

If you want it to be read and understood correctly by other devs, write 
it in Rust.

I've personally talked and pleaded with devs and near-devs of 
non-trivial projects like Tor to give me a helping hand to understand 
their code, for me to use it, to add to it, on embedded level, on code 
level. But people have no time. I get it. I try to read your properly 
structured code, and it is still not helping me, your code's user.

NodeJS is a scary thing. It has NAPI, newer interface for pluggins that 
should help me. Well, NAPI-RS, proper Rust style, released this past 
August, makes it a breeze. If I have a silly WTF about particular 
element, type system leads me to answers. Yet, higher-level macros allow 
you to give me proper description of how something non-trivial ought to 
be done, without you writing docs.

fuser is FUSE in Rust, makes it easy to understand things. Before 
January, some places were number with flags in, and out, and reader/me 
going WTF. You RTFM FUSE docs, and these were written by FUSE devs for 
FUSE devs, not FUSE users, who haven't memorized Unix. In January, 
Rust-style typing in args in and out of FUSE ops lets me read about 
FUSE. This is ergonomics at work.
[side-note] Whether RTFM is an insult or not depends on comprehension of 
M by others. And you don't control others. Hence, RTFM can be both 
healthy and insulting without any malice. Such is the nuance of this 
communication pattern. [/side-note]

deno_core is embedding of V8 done in ergonomic way. Gosh, looking back 
at last two days, I think Rust saved me years of debugging, as I would 
have put that thing with some state into that other thread. Oh, yes. 
Easily years of debugging. And Rust system will lead me precisely to 
point that "can't be moved" nudging my brain to find the sure passage 
for this machine to run.

If you have something to tell the other, write it in Rust.

I get it. Your C++ runs on a machine. But I am not a machine. Yes, I am 
not as smart as you are. I can fully grasp mental constructs that you 
develop, only when expressed in Rust. You appreciate nuances. And I want 
see them too. Write it in Rust.