Comment by afdbcreid

> In Rust, you can’t even use proper arenas

You definitely can and this is done a lot. What you might mean is that you can't use standard library's collections with them (this is getting stabilized soon!) and have to use third-party, but that is a different thing than "can't use arenas".

> Rust is not a good choice for this kind of tricks.

Rust can do those tricks, but it's true that it is hard than in C or Zig. That said there are often crates to help.