Abstract classes vs interfaces, casting from void*

[John Colvin]

On Saturday, 10 August 2019 at 17:46:37 UTC, Timon Gehr wrote:
> On 10.08.19 16:29, John Colvin wrote:
>> 
>> Ok. What would go wrong (in D) if I just replaced every 
>> interface with an abstract class?
>
> interface A{}
> interface B{}
>
> class C: A,B{ }

Yes, I know, I guess it wasn't clear unless you read my previous 
question, I said "apart from multiple inheritance".