Re: NSSound Reimplementation

[Riccardo Mottola]

Hey,
> > But ... going back to the issue of avoiding changes to ivars breaking 
> > ABI in future releases ... the approach I currently favor is having a 
> > *single* ivar in the public class.  This is a private id variable 
> > referring to an instance of a private class which is used to hold the 
> > real ivars.
>
> I really don't like this approach.  It makes the code difficult to 
> read, destroys locality of reference, and hurts performance.

I don't like it either! I think it was discussed quite a bit and we did 
not agree that it was the way to go! The discussion didn't come to a 
conclusion (I remember we also discussed it at FOSDEM), but many agreed 
that this opaque single-ivar solution was bad.

I personally would prefer just breaking the ABI if other solutions are a 
too big effort. Second place of course is David's. I cannot remember now 
why i didn't try it though... did your patch have some prerequisites?

Riccardo