Mutable reference counted objects

rcmut.rs

use std::rc::Rc;
use std::cell::{RefMut, RefCell};

struct Stuff{
    i: int,
}

fn main() {
    // Allocate ref-counted stuff
    let rcref: Rc<RefCell<Stuff>> = Rc::new(RefCell::new(Stuff{i: 1}));
    // Modify stuff
    let mut foo: RefMut<Stuff> = rcref.borrow().borrow_mut();
    let bar: &mut Stuff = foo.get();
    bar.i = 2;
}