#[derive(Copy, Clone, Debug)]
struct Thing {
    pub value: u16,
}

impl Thing {
    pub fn new(value: u16) -> Thing {
        Thing {
            value: value,
        }
    }
}

fn mutate_thing(t: &mut Thing) -> &Thing {
    t.value = 0xb33f;
    return t;
}

fn main() {
    let mut thing = Thing::new(0xcafe);

    // Create a new scope which we will borrow `thing` into
    {
        let thing2 = mutate_thing(&mut thing);
        println!("thing2 {:?} {:p}", thing2, thing2);
    }
    // Closing the scope ends the borrow and brings `thing` back into ownership
    // of the original scope

    println!("thing {:?} {:p}", thing, &thing);
}