My two cents

[Walter Bright]

On 10/21/2017 1:40 PM, Adam Wilson wrote:
> Walter has stated numerous times both here and at conferences that Async/Await 
> is definitely a goal. However, it's not as high a priority as the @safe/@nogc 
> work so it hasn't made it to any official vision statement. Also I just talked 
> to him offline about it, and he would need some serious help with it. He doesn't 
> know how to do the compiler rewrite, and there a number of tricky situations one 
> has to deal with. As much as I like Async/Await, I agree that the current plan 
> has higher priority.
> 
> I'll probably start poking around Async/Await when I can clear the decks a bit 
> of paid work. But that could be a while. :(

Async/Await can be implemented by rewriting ("lowering") the code to simpler D 
code. Implementing it awaits (!) figuring out just what those rewrite rules are.