[kibwen]

> Easier to reason about, sure, fine. Your earlier comment claims the actor model is a dead end in non-distributed systems.

If you have two ways of structuring something, and the worse way is so predominant that it obscures even the existence of the better way, that's a dead end in my book. In the pre-structured-programming days when people had to fight tooth and nail to get people to acknowledge the value of `if` and `while` over `goto`, we would have also called `goto` a dead end; it's plain to see that we would be in a worse place today if the structured programming advocates had not managed to convince everyone of its superiority.

> Results from my quick search on structured/unstructured concurrency were all references to Swift. Is this a Swift thing?

I have no idea whether Swift supports it, but no, it's not a Swift thing any more than `while` and `if` are a Python thing. I highly, highly encourage people to read the linked blog post, it will be the best use of your time today.

[eaurouge]

I read the article you referenced. It's based on, and described wrt, Python's `async with` (so quite a few layers of abstraction), so I can't say with certainty how it's implemented. But, as I noted earlier, it isn't really that different from a run-till-completion task scheduler and is not particularly novel or interesting, imo.