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

[bachmeier]

On Friday, 18 May 2018 at 12:26:14 UTC, Gheorghe Gabriel wrote:

> Good idea. Or: private(this)
> Because using "this" it is easier tu put this code in a mixin 
> for multiple classes.
> Example:
>
> string var = "private(this) var;";
>
> class A {
>     mixin(var);
> }
>
> class B {
>     mixin(var);
> }

As clean and uncontroversial as this proposal might be, it 
unfortunately doesn't resolve the biggest issue. If you try to 
write Java code in D, you're still going to be using private, and 
you're still going to be caught by surprise. And this is another 
step in the direction of C++ (we need to think of beginning 
programmers every so often) so there are costs. It's possible 
that since I rarely use classes I'm not seeing the large benefits.