error : outer function context of `D main` is needed to `new` nested class `main.main.X`

[Adam D. Ruppe]

On Thursday, 15 August 2019 at 01:55:17 UTC, Bert wrote:
> void main()
> {
>     class X { ... }

I would just make it `static class X` and then it shoudl work 
fine.

Won't be able to access main's local variables then though, but 
you could pass the necessary ones through the constructors or 
something.