//use ndarray::array;

fn main() {
    let arr: [[i8; 2]; 2] = [[1, 2], [6, 7]];
    //let arr = vec![vec![1i8, 2, 3], vec![6, 7]];
    //let arr = array![[1i8, 2], [6, 7]];
    //let arr = array![[1i8, 2], [6, 7]].t();

    let base = &arr[0][0] as *const _ as usize;
    let mut can_be_row_major = true;
    let mut can_be_noncontig_row_major = true;
    for (i, s) in arr.iter().enumerate() {
        let row_base = &s[0] as *const _ as usize;
        for (j, _) in s.iter().enumerate() {
            let offset = &arr[i][j] as *const _ as usize - base;
            let row_offset = &arr[i][j] as *const _ as usize - row_base;
            println!(
                "arr[{}][{}]: offset {} (in-row offset {})",
                i, j, offset, row_offset
            );
            if row_offset != j {
                can_be_noncontig_row_major = false;
            }
            if offset != j + i * s.len() {
                can_be_row_major = false;
            }
        }
    }
    println!("Can be row-major: {}", can_be_row_major);
    println!("Can be non-contiguous row-major: {}", can_be_noncontig_row_major);
}