Negation of attributes (DIP 79)

[Namespace via Digitalmars-d]

On Tuesday, 2 June 2015 at 11:07:21 UTC, Liam McSherry wrote:
> In the examples you give, you could surround the final methods 
> in a final block. Testing with dmd 2.067.1, the following works:
>
> ---
> class C
> {
>     final
>     {
>         void nonOverrideable()
>         {
>             "Hello, World!".writeln;
>         }
>     }
>
>     bool overrideable()
>     {
>         return true;
>     }
> }
>
> class D : C
> {
>     override void nonOverrideable() // Error
>     {
>         "Goodbye!".writeln;
>     }
>
>     override bool overrideable() // No error
>     {
>         return false;
>     }
> }
> ---
>
> To me, at least, it's also more intuitive than "!final:".

For me it looks ugly. But I would prefer final(false) instead of 
!final.