fn iter_slices<Matrix: AsRef<[Row]>, Row: AsRef<[u8]>>(slice: Matrix) {
    let mut some_value = 0;
    for row in slice.as_ref() {
        for item in row.as_ref() {
            println!("{}", item);
        }
    }
}


const SMALL_EXTENSION_MATRIX: [[u8; 5]; 5] = [
    [0, 0, 0, 0, 0],
    [0, 0, 1, 0, 0],
    [0, 1, 1, 1, 0],
    [0, 0, 1, 0, 0],
    [0, 0, 0, 0, 0]
];

fn main() {
    let result = iter_slices(&SMALL_EXTENSION_MATRIX);

    //println!("{:#?}\nreturns: {}", stuff_refs, result);
}