Re: Implement async/await using Fiber

[Yuxuan Shui via Digitalmars-d-learn]

On Thursday, 19 May 2016 at 23:42:03 UTC, Ali Çehreli wrote:
On 05/19/2016 12:57 PM, Yuxuan Shui wrote:
[...]

You can use a delegate that takes a ref parameter:

import std.stdio;
import core.thread;

void fiberFunc(ref string y) {
    y = "produced_by_fiberFunc";
    Fiber.yield();
}

void main() {
    string data;
    auto f = new Fiber(() => fiberFunc(data));
    f.call();
    writefln("Writing in main: %s", data);
}

Prints:

Writing in main: produced_by_fiberFunc

Also see std.concurrency.Generator. Both methods appear here:

  http://ddili.org/ders/d.en/fibers.html

Ali

Hmm... This could work. But I'm not satisfied with this solution. 
What if I have multiple yield sites in the fiber, and each have 
different return types?

Maybe I should use a Variant?