Comment by kryps
10 hours ago
No, you can't do the same thing in Rust, because Rust crates and the standard library generally use the global allocator and not any arena you want to use in your code.
10 hours ago
No, you can't do the same thing in Rust, because Rust crates and the standard library generally use the global allocator and not any arena you want to use in your code.
I mean you can store the nodes in an arena so you don't have to deal with the borrow checker getting upset with your non-tree ownership structure. That's the context. We weren't talking about arena use for speed/efficiency purposes. In that case you are right; it's much more awkward to use custom allocators in Rust.