Rust enum impl block

main.rs

#[derive(Debug)]
pub enum Bucket {
    One,
    Two,
}

impl Bucket {
    fn other(&self) -> Self {
        match self {
            Bucket::One => Bucket::Two,
            Bucket::Two => Bucket::One,
        }
    }
}

fn main() {
    dbg!(Bucket::One.other(), Bucket::Two.other());
    // Bucket::One.other() = Two
    // Bucket::Two.other() = One
}