pub fn select<A: Future, B: Future>(a: A, b: B) -> Select<A, B> ⓘExpand description
Poll two futures concurrently, returning whichever completes first. Poll two futures concurrently, returning whichever completes first.
Biased: always polls a before b. When both are ready simultaneously,
a wins. The losing future is dropped.
Safe with ringline I/O futures — data buffered for a dropped WithDataFuture
remains in the accumulator and is consumed on the next with_data() call.
Dropped SleepFutures correctly cancel their io_uring timeout SQE.