LPollable

The second LPollable is "detained" because that gives the client flexibility in how the Done signal resulting from the exhaustion of the first LPollable is awaited. For example, if polling of the second LPollable should be delayed until the first LPollable is completely shut down, the client can use detain to delay the second LPollable. If polling of the second LPollable should start as soon as it is known that there are no more elements in the first LPollable, the client can use detainClosed to delay the second LPollable.

Delays the first action (poll or close) until the Done signal completes.

Delays the final Done signal (signaling end of stream or completed close) until the given Done signal completes.

Blocks the first action (poll or close) on this LPollable until released.

Delays the final Done signal resulting from close or end of stream.

Polls and discards all elements.

Merges two LPollables into one. Left-biased: when there is a value available from both upstreams, favors the first one.

Merges a list of LPollables into a single LPollable. Head-biased: when there is an element available from multiple upstreams, favors the upstream closest to the head of the input list.

Signals the first action (i.e. poll or close) via a negative (Pong) signal.

Splits a stream of "A or B" to a stream of A and a stream of B.

Polls the upstream only after ''both'' downstreams poll. When either of the downstreams closes, the other downstream and the upstream are closed as well.