On Jul 29, 2008, at 7:45 PM, Torsten Curdt wrote:
Thanks for that!Really interesting - but also sounds really terrible :) Makes you wonder why stuff like hasn't been fixed in Objective-C 2.0.
It has been in the modern runtime -- the runtime used in on 64 bits and "other places". In that environment, the runtime can and will @synthesize instance variables and it is possible to add instance variables in a private way (but not supported entirely in syntax).
As well, the modern runtime allows a superclass to add instance variables without recompiling subclasses.
It isn't fixed in the 32 bit runtime because we couldn't figure out a way to do so that both preserved binary compatibility and used a finite amount of memory / CPU.
b.bum
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