need `this` on trying to use class method with parallelism Task! or task!

[Andrey Zherikov]

On Sunday, 14 November 2021 at 12:01:36 UTC, Alexey wrote:
> 

You just need two changes:
- make `threadFunc` function static: `static void threadFunc()`
- use `task` instead of `Task`: `auto t1 = task!threadFunc;`