Rust matrix moving via refcell

output

clone
move
move
[100, 200, 300]

test.rs

use std::cell::RefCell;

struct Matrix
{
    data: RefCell<Option<Vec<f32>>>
}

impl Mul<f32, Matrix> for Matrix
{
    fn mul(&self, r: &f32) -> Matrix
    {
        println!("move");
        let mut data = self.data.borrow_mut().take().unwrap();
        for v in data.mut_iter()
        {
            *v *= *r;
        }
        Matrix{ data: RefCell::new(Some(data)) }
    }
}

impl<'l> Mul<f32, Matrix> for &'l Matrix
{
    fn mul(&self, r: &f32) -> Matrix
    {
        println!("clone");
        let mut data = self.data.borrow().get_ref().clone();
        for v in data.mut_iter()
        {
            *v *= *r;
        }
        Matrix{ data: RefCell::new(Some(data)) }
    }
}

fn main()
{
    let m = Matrix{ data: RefCell::new(Some(vec![1.0f32, 2.0, 3.0])) };
    
    let m2 = &m * 2.0 * 5.0 * 10.0;
    
    println!("{}", m2.data.borrow().get_ref());
}