rust struct that works for both String and &str members

borrowed_or_owned_string_struct.rs

struct Event<S> {
    id: S
}

impl<T: AsRef<str>> Event<T> {
    fn print(&self) {
        println!("event({})", self.id.as_ref());
    }
}


fn main() {
    let owned_event = Event { id: String::from("owned_id") };
    owned_event.print();
    let borrowed_event = Event { id: "borrowed_id" };
    borrowed_event.print();
}