Implement AsyncSequence.enumerated()

[adam-fowler]

Pretty much the same as Sequence.enumerated but for AsyncSequence.

eg Translates ["a", "b", "c"] to [(0,"a"), (1, "b"), (2, "c")]

[FranzBusch]

Thanks for opening this @adam-fowler! Definitely a needed AsyncSequence. We are still finalising the 1.0.0 release. I will mark this as a 1.1.0 candidate

[phausler]

I know this has been a very long while since this was posted; however since we are at development for 1.1 this is a really useful algorithm for composing buffer dropping detection and other such things. I would love to run this in the near future - if you are still interested in pushing this forward I would like to see if this is something you would still like to do. Alternatively I can update this and drive it forward if not (still of course giving credit for the original drafts)

[adam-fowler]

I know this has been a very long while since this was posted; however since we are at development for 1.1 this is a really useful algorithm for composing buffer dropping detection and other such things. I would love to run this in the near future - if you are still interested in pushing this forward I would like to see if this is something you would still like to do. Alternatively I can update this and drive it forward if not (still of course giving credit for the original drafts)

Hi, yes I'd be happy to push this forward. I'm out for the next two weeks but can respond to any PR requests after that.

[phausler]

That probably aligns just right with some of the other algorithms. Let me know when you feel things are ready to go.

I think there are a few implementation details that need to be addressed but the major issue is getting a proposal written.