Method notify

toys/condvar-struct/src/main.rs:27–33

(&self)

            println!("end waiting");
        }
        fn notify(&self) {
            let mut started = self.lock.lock().unwrap();
            println!("start notifying!");
            *started = true;
            self.cvar.notify_one();
            println!("end notifying!");
        }
    }

    let condvar1 = Arc::new(CondPair::new());