fix AsyncSeq.scanAsync #11

[eulerfx]

No description provided.

[dsyme]

I think it's better to stay idiomatic and use

asyncSeq { yield state; yield! go f state input }

[dsyme]

One comment, otherwise LGTM

[eulerfx]

Done. This would make for an easier change to IAsyncEnumerable. Maybe a cons function makes sense:

  let inline cons (head:'T) (tail:AsyncSeq<'T>) : AsyncSeq<'T> =
    asyncSeq { yield head ; yield! tail }

[dsyme]

I think you should feel free to submit PRs for correct and tested versions of any of the Seq.* functions or async variations of them (e.g. mapAsync - though we already have that).