gistfile1.rs

fn main() {
    #[deriving(Show)]
    struct Foo {
        a: i32
    }

    let mut test:Vec<Foo> = Vec::new();
    test.push(Foo { a: 1 });
    test.push(Foo { a: 3 });
    test.push(Foo { a: 2 });

    {
        let mut res = &mut Foo { a: 0 };
        for t in test.mut_iter() {
            if t.a > res.a {
                res = t;
            }
        }
        res.a = 10;
    } // res is destroyed here, so you can now borrow test again
    
    println!("{}", test);
}