Doug's concurrent merge sort + actor counters examples

Evolution Discussion
7

Is there a difference between these two examples?

// func f()

// 1
await Task.runDetached {
    f()
}

// 2
async let task = f()
await task

Likewise:

// func g() async

// 3
await g()

// 4
async let task = g()
await task

If examples 3 and 4 behave differently then that concerns me. You should be able to split off the continuation without changing the context in which the function is called.

I would rather forbid example 2 than make 3 and 4 behave differently. I don’t personally see much value in supporting case 2 when case 1 is clearer and seems to meet all the same use cases.