fn main() -> u32 {
    // Create a value to be mutated
    let mut value = [4, 3, 2];

    // Pass a mutable borrow of the value
    mutate(&mut value);

    // Retrieve the now-mutated value
    return value[1];
}

fn mutate(value: &mut [u32; 3]) {
    // Dereference the borrow to mutate it
    *value[1] = 17;
}