SE-0304 (4th review): Structured Concurrency

[benrimmington]

@Douglas_Gregor

No other suspension point works that way, and there is no Task.resume(), so I'm having a hard time seeing where this could cause actual confusion.

Would await Task.reschedule() be any clearer?

@Chris_Lattner3

One further question: why is the duration a UInt64? Swift generally uses Int as the currency type for values like this, even those that are logically unsigned (e.g. the result of count). Shouldn't this be an Int?

I think a 32-bit Int would only allow two (2.147483647) seconds of sleep.