> Does Rc really resolve the core problem this post is talking about, which is that it's really painful to naturally express tree and graph structures in Rust

> Does Rc really resolve the core problem this post is talking about, which is that it's really painful to naturally express tree and graph structures in Rust No, it doesn't. If you naively express graphs containing cycles with `Rc` you will leak memory, just like you would with `std::shared_ptr` in C++.