What are the real advantages that D offers in multithreading?

[Chris Wright via Digitalmars-d]

On Wed, 27 Jan 2016 17:30:28 +0000, Brad Anderson wrote:

> Yeah, boost can do fibers. ASIO has clever/hacky "stackless coroutines"
> and C++17 is going to add "stackless resumable functions" for
> async/await. D is about to lose a competitive advantage here.

I looked at those stackless coroutines. They're nowhere near good enough 
for what I wanted to do. You can't use them for a vibe-like framework. 
But they're still called coroutines, so D's going to lose a marketing 
advantage.