How do I create two new mutable slices from one slice?

Question

I would like to take a mutable slice and copy the contents into two new mutable slices. Each slice being one half of the original.

My attempt #1:

let         


        

Answer 1

You can build vectors from slices directly by cloning the elements using multiple methods:

1. Vec::to_vec
2. From / Into
3. ToOwned

fn main() {
    let my_list: &mut [u8] = &mut [0, 1, 2, 3, 4, 5];
    let mut vec1 = my_list[0..2].to_vec();
    let mut vec2: Vec = my_list[2..4].into();
    let mut vec3 = my_list[2..6].to_owned();

    println!("{:?}", vec1);
    println!("{:?}", vec2);
}

Your original problem was caused because all of these return a Vec but you were attempting to claim that it was a slice, equivalent to:

let thing: &mut [u8] = Vec::new();