[db48x]

This article is explaining how Futures work by showing you what's under the covers. You don't actually have to write this code yourself, you can just use one of many wonderful libraries that handle it all for you.

As it says in the second paragraph: "Going into the level of detail I do in this book is not needed to use futures or async/await in Rust. It's for the curious out there that want to know how it all works."