rustlings/exercises/move_semantics/move_semantics3.rs

// move_semantics3.rs
//
// Make me compile without adding new lines-- just changing existing lines! (no
// lines with multiple semicolons necessary!)
//
// Execute `rustlings hint move_semantics3` or use the `hint` watch subcommand
// for a hint.

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

    let mut vec1 = fill_vec(&mut vec0);

    println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);

    vec1.push(88);

    println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
}

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

    vec.to_vec()
}