小编Ian*_*ing的帖子

这段代码不会编译：

fn main() {
    let m1 = vec![1, 2, 3];
    let m2 = vec![&m1, &m1, &m1];
    let m3 = vec![vec![1, 2, 3], vec![4, 5, 6], vec![7, 8, 9]];

    for i in &m2 {
        for j in i {
            println!("{}", j);
        }
    }

    for i in &m3 {
        for j in i {
            println!("{}", j);
        }
    }
}

fn main() {
    let m1 = vec![1, 2, 3];
    let m2 = vec![&m1, &m1, &m1];
    let m3 = vec![vec![1, 2, 3], vec![4, 5, …