Cannot obtain a mutable reference when iterating a recursive structure: cannot borrow as mutable more than once at a time

Question

I\'m trying to navigate a recursive data structure iteratively in order to insert elements at a certain position. To my limited understanding, this means taking a mutable re

Answer 1

It works:

fn back(&mut self) -> &mut Link {
    let mut anchor = &mut self.root;
    while anchor.is_some(){
        anchor = &mut {anchor}.as_mut().unwrap().next;
    }
    anchor
}