Function rosrust::singleton::subscribe_with_ids_and_headers

source ยท 
pub fn subscribe_with_ids_and_headers<T, F, G>(
    topic: &str,
    queue_size: usize,
    on_message: F,
    on_connect: G,
) -> Result<Subscriber>
where
    T: Message,
    F: Fn(T, &str) + Send + 'static,
    G: Fn(HashMap<String, String>) + Send + 'static,