The Final(ize) Challenge

[Andrei Alexandrescu]

Frits van Bommel wrote:
> Andrei Alexandrescu wrote:
>> Good point! Now define Unfinalize that opens the final methods of a 
>> class for method overriding.
>>
>> class A
>> {
>>     final int foo(string) { ... }
>> }
>>
>> class UnfinalizeA : A
>> {
>>     int foo(string a) { return super.foo(a); }
>> }
> 
> DMD rightly doesn't allow this:
> ---
> test.d(8): Error: function test.UnfinalizeA.foo cannot override final 
> function test.A.foo
> ---
> 
> There's a workaround though:
> ---
> class UnfinalizeA : A
> {
>     int foo_(string a) { return super.foo(a); }
>     alias foo_ foo;
> }

Damn. I meant to NOT inherit from A.

Andrei