You could store a `RefCell<Option<T>>` in an `Rc` and set it to `Some(rc)` after creation. Or you could use the recently-stabilized `new_cyclic` method: https:

You could store a `RefCell<Option<T>>` in an `Rc` and set it to `Some(rc)` after creation. Or you could use the recently-stabilized `new_cyclic` method: https://doc.rust-lang.org/std/rc/struct.Rc.html#method.new_cyclic https://doc.rust-lang.org/std/rc/struct.Rc.html#method.new_c...