DMD 2.066 Alpha

[Daniel Kozak via Digitalmars-d-announce]

On Friday, 13 June 2014 at 03:52:00 UTC, Andrei Alexandrescu 
wrote:
> On 6/12/14, 8:49 PM, Nick Sabalausky wrote:
>> On 6/12/2014 11:13 PM, Andrei Alexandrescu wrote:
>>> On 6/12/14, 7:26 PM, Daniel Murphy wrote:
>>
>>>> It
>>>> 1. allows escaping final, which we can't do without it or an 
>>>> equivalent
>>>> 2. does exactly what everybody expects
>>>> 3. is already implemented
>>>> 4. looks much nicer than your proposal
>>>>
>>>> Why not just leave it in?  I'm already using it, and it makes
>>>> extern(C++) classes MUCH more readable (ie DDMD)
>>>
>>> Please no new keyword for what can be done already. It's not
>>> proportional response.
>>>
>>
>> AFAIK, escaping final *can't* be done.
>
> It can be worked around. -- Andrei

Yes, it can be done. I am able to do something like this:

class A
{
	mixin(Virtual!A);

final:
	@Overridable()
	void method(this M)(int x) {
		writeln("virtual A");
	}
}

class B : A
{
	mixin(Virtual!B);
final:
	@Override() void method(this M)(int x) {
		writeln("virtual B");
	}
}

class C : B
{
final:
	override void method(int x) {
		writeln("virtual C");
	}
}

void main(string[] args)
{
	A a = new A;
	a.method(7); //print virtual A
	a = new B;
	a.method(7);print virtual B
	a = new C;
	a.method(7); print virtual C
	stdin.readln;
}