[dmd-beta] D2 2.058 beta

[Sönke Ludwig]

>>________________________________
>> From: Sönke Ludwig <ludwig at informatik.uni-luebeck.de>
>>
>>Am 09.02.2012 09:16, schrieb Walter Bright:
>>> http://ftp.digitalmars.com/dmd2beta.zip
>>> _______________________________________________
>>> dmd-beta mailing list
>>> dmd-beta at puremagic.com
>>> http://lists.puremagic.com/mailman/listinfo/dmd-beta
>>
>>The deprecation of base class protection seems to have overshot its goal
>> a bit - implemented _interfaces_ are now also not allowed to be prefixed
>> with a protection attribute, although this can make perfect sense.
>
> Right, an interface is a public desription of what a class can do.  I
> can't see any valid use case for private or protected interfaces.
>
> -Steve
>
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>

Artificial example (I have a different use case, but the pronciple is
similar):

interface ILinkedListItem {
  LinkedListItem next();
  void next(LinkedListItem v);
}

LinkedList objectStore;

class C : protected ILinkedListItem {
  this()
  {
    objectStore.add(this);
  }

  protected LinkedListItem next() {...}
  protected void next(LinkedListItem v) {...}
}

So the intent is that you don't have access to these methods from the
outside, but that C can still implement the interface to pass it only to
certain receivers (the objectStore list in this case).