proman21

fn subsets<T>(set: &[T]) -> Vec<Vec<&T>> {
    if let Some((first, rest)) = set.split_first() {
        let mut subsets = subsets(rest);
        for mut set in subsets.clone() {
            set.insert(0, first.clone());
            subsets.push(set);
        }
        subsets
    } else {
        vec![vec![]]

proman21

Keybase proof

I hereby claim:

• I am proman21 on github.
• I am synthsym (https://keybase.io/synthsym) on keybase.
• I have a public key ASCr9tDfH8iiHmyHq2M5WSAQigjOsYZF8e-f853sa_kXBwo

To claim this, I am signing this object: