It's that as well, but that part of the description doesn't catch how objects are automatically freed once the last reference to them (the owning one) is dropped.
Meanwhile my description doesn't fully capture how it guarantees unique access for writing, while yours does.
> but that part of the description doesn't catch how objects are automatically freed once the last reference to them (the owning one) is dropped.
You're confusing the borrow checker with RAII.
Dropping the last reference to an object does nothing (and even the exclusive &mut is not an "owning" reference). Dropping the object itself is what automatically frees it. See also Box::leak.
gpm|4 months ago
Meanwhile my description doesn't fully capture how it guarantees unique access for writing, while yours does.
cesarb|4 months ago
You're confusing the borrow checker with RAII.
Dropping the last reference to an object does nothing (and even the exclusive &mut is not an "owning" reference). Dropping the object itself is what automatically frees it. See also Box::leak.