Sealed classes - would you want them in D? (v2)

[Chris M.]

On Friday, 18 May 2018 at 12:16:55 UTC, aliak wrote:
>
> You may not need a new word at all. You can also enhance 
> private to take arguments. Package already does this. You can 
> give private a symbol list that says which symbols this is 
> private for. So:
>
> class A {
>   private int x;
>   private(A) int y;
> }
> void main() {
>   A a = new A();
>   a.x = 7; // ok, it's private to module
>   a.y = 3; // error, it's sealed to class
> }
>
> Cheers,
> - Ali

Don't really have a stake in the convo, but I'll jump in to say 
this looks like a solid solution to me (also agree 'this' instead 
of classname).