Re: [Pyobjc-dev] objc classes

[Helge H. <hel...@op...>]

On May 29, 2004, at 7:35, Ronald Oussoren wrote:
>>> Further, would it possible to change the class hierarchy of an 
>>> existing class? So that MyFormatter initially inherits from say 
>>> NSFormatter and after reloading a Python module inherits from 
>>> NSDateFormatter. Would that be possible with the Apple ObjC runtime 
>>> or is this already possible with PyObjC?
> It is not possible with PyObjC. It might be possible with the Apple 
> ObjC runtime, but would be pretty hard using the GNUstep runtime (that 
> one definitely maintains a list of subclasses).

Well, the question is what the list of subclasses is actually used for. 
I'm mostly concerned about "live editing" during development, ala 
fix&continue, where the superclass changes (so hacks are great as well 
;-). If some subclass reflection doesn't work, it should be acceptable 
I guess.

Hm, I just wonder whether posing is just that or helps here?

> This limitation may be liften in a future version of PyObjC. Reloading 
> can be useful during development.

Exactly. I'm just thinking about development time where one has typed 
in a scripted class in some editor and then rethinks about the 
superclass.

Greets,
   Helge
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