Rust Programming Cookbook

How it works...

Rust's ownership principle is a double-edged sword: on the one hand, it protects from unintended consequences and enables compile-time memory management; on the other hand, mutable access is significantly more difficult to obtain. While it is more complex to manage, shared mutable access can be great for performance.

Arc stands for Atomic Reference Counter. This makes them very similar to regular reference counters (Rc), with the exception that an Arc does its job with an atomic increment, which is thread-safe. Therefore, they're the only choice for cross-threaded reference counting.

In Rust, this is done in a way similar to interior mutability (https://doc.rust-lang.org/book/ch15-05-interior-mutability.html), but using ...