#[derive(Clone)]
pub struct Face {
    has_eyes: bool,
}

pub struct Cat {
    face: Face,
}

fn from_face(face: &Face) -> Cat {
    Cat {
        face: *face,
    }
}


fn main() {
    let face = Face{ has_eyes: true };
    let _cloned_face = face.clone();
    let _cat = from_face(&face);
}