pub fn queue_channel<Q, Item, F1, R, F2>(
q: Q,
f1: F1,
f2: F2,
) -> (QueueSender<QueueStream<Q, Item, F2>, Item, F1, R>, QueueStream<Q, Item, F2>)
pub fn queue_channel<Q, Item, F1, R, F2>(
q: Q,
f1: F1,
f2: F2,
) -> (QueueSender<QueueStream<Q, Item, F2>, Item, F1, R>, QueueStream<Q, Item, F2>)