rustlings/exercises/move_semantics/move_semantics2.rs.bak

// move_semantics2.rs
// Make me compile without changing line 13 or moving line 10!
// Execute `rustlings hint move_semantics2` for hints :)

// I AM NOT DONE

fn main() {
    // original code
    // comment out for solution1/solution2
    let vec0 = Vec::new();

    // solution1 (part0)
    // let mut vec0 = Vec::new();

    // solution2 (part0)
    // let vec0 = &mut Vec::new();

    // solution0
    let mut vec0_copy = &vec0;
    let mut vec1 = fill_vec(vec0_copy.to_vec());

    // original code
    let mut vec1 = fill_vec(vec0);

    // solution1 (part0)
    // let mut vec1 = fill_vec(&vec0);

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

    vec1.push(88);

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

// original code
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
    let mut vec = vec;

    vec.push(22);
    vec.push(44);
    vec.push(66);

    vec
}

// solution1 (part1)
// fn fill_vec(vec: &Vec<i32>) -> Vec<i32> {
//     let mut vec = vec.to_vec();

//     vec.push(22);
//     vec.push(44);
//     vec.push(66);

//     vec
// }

// solution2
// fn fill_vec(vec: &mut Vec<i32>) -> Vec<i32> {
//     let mut vec = vec.clone();

//     vec.push(22);
//     vec.push(44);
//     vec.push(66);

//     vec
// }