[markus2012]

I'm just now completing a rather large event-driven system in Rust. It's also callback-based and has to interoperate with C.

I do struggle with the ownership rules sometimes but it's pretty much always because I'm clashing with the bad habits I learned coding in C/C++, or I'm shooting my future-self in the foot because my limited cognitive capabilities can't always keep all code paths in memory perfectly all the time.

The borrow checker came with an upfront cognitive cost that ultimately saved me from multithreaded async I/O madness later on. I can sleep at night knowing my multithreaded async system is more sound and easier to safely extend/maintain than it would have been had I created it in C/C++.

I can see why some people might give up on Rust. In C++ you can take the easy way out (use mutable aliasing etc.) and you can quickly get things 'working'. You don't have it so easy in Rust because you have to carefully think about end-end ownership.

Also in Rust I found that when I did make bad design decisions it was sometimes a lot more work (redesigning structs, shifting ownership responsibility) than it would have been in C/C++ (because I probably would have laid land-mines for my future self by mutably aliasing things etc.).

[nickpsecurity]

It would probably help if you described how you build a large, event-driven system with callbacks in Rust. Then, the parent and anyone else doubting it would see specifically how to go about it without problems they describe. Also, any links you have to posts specifically on good style or structure for these in Rust would be helpful if you couldn't give details on your own work for whatever reason.