rustlings/exercises/move_semantics/move_semantics2.rs

// move_semantics2.rs
// Execute `rustlings hint move_semantics2` or use the `hint` watch subcommand for a hint.

// Expected output:
// vec0 has length 3 content `[22, 44, 66]`
// vec1 has length 4 content `[22, 44, 66, 88]`

fn main() {
    let mut vec0: Vec<i32> = Vec::new();

    // Do not move the following line!
    fill_vec(&mut vec0);

    // Do not change the following line!
    println!("{} has length {} content `{:?}`", "vec0", vec0.len(), vec0);

    vec0.push(88);

    println!("{} has length {} content `{:?}`", "vec0", vec0.len(), vec0);
}

fn fill_vec(vec: &mut Vec<i32>) -> &Vec<i32> {
    vec.push(22);
    vec.push(44);
    vec.push(66);

    vec
}