Re: RFC: [GDL2/base] unableToSetNullForKey: / unableToSetNilForKey:

[David Ayers]

Manuel Guesdon wrote:

> No, I see this usefull only for display group query dictionary. But may be 
> there's a better solution: we don't
> overwrite/implement this for NSDictionary but we implement 
> takeValue:forKeyPath:,... in GSWDisplay group and this
> implementation will take care of combined keys.
> What do you think ?
>  
Hi Manuel,

I must admit that I still don't know enough about the internal mechanics 
of GSWDisplayGroup.  But I think it would be worth while creating a 
GSWMutableDictionary as a subclass of NSMutableDictionary that 
implements the feature.  And have GSWDisplayGroup use these 
dictionaries....  That would at least confine the scope of the issue.  
I'm not sure what the implecations of using this dictionary in other 
contexts is though, but what ever might go wrong will definately go 
wrong if the implementation is in NSDictionary as it is now.  And if we 
had the special subclass we could easily 'fix' any potential issue in 
that context be creating a new [NSDictionary 
dictionaryWithDictionary:aGSWDictionary] in that context.

Hmm. I think I like the idea.  Lets ponder about it a bit more.

Cheers,
Dave