Function futures_ext::send_discard

pub fn send_discard<T, E>(
    sender: Sender<T>, 
    value: T
) -> impl Future<Item = (), Error = E> + Send where
    T: Send,
    E: Send, 

Send an item over an mpsc channel, discarding both the sender and receiver-closed errors. This should be used when the receiver being closed makes sending values moot, since no one is interested in the results any more.

E is an arbitrary error type useful for getting types to match up, but it will never be produced by the returned future.