Rust ownership applies to heap allocated objects as well; if you return a reference to a member of a heap allocated struct that reference cannot outlive the str

Rust ownership applies to heap allocated objects as well; if you return a reference to a member of a heap allocated struct that reference cannot outlive the struct allocation. The point of the article is more general than "stack vs heap;" other languages are either incapable of expressing a reference to a member of a heap allocated struct or incapable of ensuring the memory safety of such a reference.