Slice patterns in Nightly Rust

[Dennis Ritchie via Digitalmars-d]

Recently published documentation Nightly Rust. I saw this:
https://doc.rust-lang.org/nightly/book/slice-patterns.html
What do you think about this: a terrible thing or a cool feature?

fn is_symmetric(list: &[u32]) -> bool {
    match list {
        [] | [_] => true,
        [x, inside.., y] if x == y => is_symmetric(inside),
        _ => false
    }
}

fn main() {
    let sym = &[0, 1, 4, 2, 4, 1, 0];
    assert!(is_symmetric(sym));

    let not_sym = &[0, 1, 7, 2, 4, 1, 0];
    assert!(!is_symmetric(not_sym));
}

http://is.gd/TvrXSn

I see this competition slices of D. Also seen are not very clear 
design.