fn do_something<T, S>(params: &[S], subs: &[T])
where
    T: Clone + std::slice::SliceIndex<[S]>,
    <T as std::slice::SliceIndex<[S]>>::Output: std::fmt::Debug,
    S: std::fmt::Debug,
{
    for range in subs {
        println!("Sequence: {:?}", &params[range.clone()]);
    }
    println!("Unsliced: {:?}", params);
}

fn main() {
    let mut params = vec![];
    let mut idx = vec![];
    let mut global_idx = 0;
    for seq in &[vec![0], vec![4, 3], vec![38, 2, 1, 255, 100]] {
        let start = global_idx;
        for p in seq {
            params.push(*p);
            global_idx += 1;
        }
        idx.push(start..global_idx);
    }
    do_something(&params, &idx);
}