Method poll

src/background.rs:123–129

(&self)

    }

    pub fn poll(&self) -> Option<T> {
        match self.result.try_recv() {
            Ok(value) => Some(value.unwrap()),
            Err(TryRecvError::Empty) => None,
            Err(e) => panic!("{:?}", e),
        }
    }

    pub fn wait_timeout(&self, wait: Duration) -> Option<T> {
        match self.result.recv_timeout(wait) {