What's the secret to static class members

[Adam D. Ruppe via Digitalmars-d-learn]

On Wednesday, 29 June 2016 at 15:18:53 UTC, Guido wrote:
> I'm using a static class member in a parent class, but can't 
> get the compiler to see it.
>
> Class Grid{
>   public:
>   uint xdim;
> }

That's not static.... do `static uint xdim;` if you want it 
static (in this context, static means it is shared across all 
objects of the class)

> grid = new Grid;
> grid.xdim = 0;
>
> holder = new Holder;
> holder.xdim = 0;

those DO work if you declare the variable

auto grid = new Grid;
grid.xdim = 0;

auto holder = new Holder;
holder.xdim = 0;