The AsyncIterator interface

In a previous post, I established the notion of “registers” - code in Rust can be written in different registers, and it’s important to adequately support all registers. I specifically discussed the low-level interface of the AsyncIterator trait, about which there is currently a debate. The interface it currently has is a method called poll_next, which is a “poll” method like Future::poll. Poll methods are very “low-level” and are harder to write correctly than async functions....

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