Comment by written-beyond

Rust and Swift have done a fair bit of borrowing from each other "pun intended".

I've never got the chance to work with swift since their cross platform compatibility and "server-side swift" have been recent introductions.

In terms comparison, it really is the closest you can get to a rust that ARC BOX's everything (which has/ is planned to come down when lifetimes come in). You get a good runtime and good performance.