Function main

tests/binary/mutable_borrow/src/main.rs:28–49

()

// Function taking a mutable borrow of the whole Point
fn shift_point(p: &mut Point) {
    p.x += 10; // Modify field directly via mutable borrow of struct
    make_y_negative(&mut p.y); // Re-borrow field mutably and pass to another function
    p.x += 5; // Modify field again after inner borrow ended
}

fn check_arrays_of_mutable_references() {
    let mut first = 1;
    let mut second = 2;
    {
        let refs = [&mut first, &mut second];
        *refs[0] += 10;
        *refs[1] += 20;
        assert!(*refs[0] == 11);
        assert!(*refs[1] == 22);
    }

    let mut left = Point { x: 3, y: 4 };
    let mut right = Point { x: 5, y: 6 };
    {
        let refs = [&mut left, &mut right];
        refs[0].x += 30;
        refs[1].y += 60;
        assert!(refs[0].x == 33);
        assert!(refs[1].y == 66);
    }