learn_rust_bugs 0.1.0

Self-learning Rust
Documentation 
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use std::cell::RefCell;
use std::rc::{Rc, Weak};

#[derive(Debug)]
pub struct Node {
    value: i32,
    parent: RefCell<Weak<Node>>,
    children: RefCell<Vec<Rc<Node>>>,
}

fn tree_test() {
    let leaf = Rc::new(Node {
        value: 10,
        parent: RefCell::new(Weak::new()),
        children: RefCell::new(vec![]),
    });
    let branch = Rc::new(Node {
        value: 20,
        parent: RefCell::new(Weak::new()),
        children: RefCell::new(vec![Rc::clone(&leaf)]),
    });
    *leaf.parent.borrow_mut() = Rc::downgrade(&branch);
}