[curun1r]

It depends on whether an abstraction is intended for novices or, for lack of a better term, power users. Tokio is, IMHO, more of the latter. It's a complex set of concepts that is designed to scale up very well as the complexity of the task increases but doesn't scale down very well for simple tasks* . Learning quite often involves those simple tasks, so Tokio gets a reputation for being hard to learn. But when you take an easy-to-learn abstraction and try to scale it up to handle very complex problems, you often find the abstraction breaks down much more easily than something like Tokio does.

Tokio doesn't subscribe the the Larry Wall philosophy of making the easy things easy and the hard things possible. It seems more focused on making the hard things as easy as possible without much regard for the easy things.

* Before anyone attacks this...yes, you can accomplish simple tasks in Tokio, but it requires learning a lot more concepts than should be necessary to accomplish that simple task.

[lurr]

So what, if you aren't already an expert then go away you aren't wanted?