[marcosdumay]

The author's point is that Rust is not a good language for software like that example. But very, very little software is like that, and you can always divide it up in large blocks inside of what Rust fits quite well.

Personally, I'm a bit more radical than the author. You won't be able to write software like the example correctly. It should just not be done, ever. Machines can still optimize some sanely organized software into the same thing, maybe, if it happens to be a tractable problem (I'm not sure anybody knows). But people shouldn't touch that thing.