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

[David Ayers]

Hi Stéphane,

Stéphane Corthésy wrote:

> Hi,
>
> I suggest you to change function GSObjCReplaceImplementation to 
> return  the old IMP pointer: this allows us more tricky things like 
> overloading  methods (not simply replacing) by providing a 
> complementary  implementation and calling eventually the original 
> implementation,  a  trick I suggested some time ago.

I must have missed your suggestion, but yes! Returning the original IMP 
is a "Good Idea".  It also popped in my head after reading my mail 
yesterday.  Will do!

> Should/could it not be done in your  case? Do you really want to 
> replace the whole original implementation,  or just extend it?
Well not really in this case, because the method called by the new 
implementation raises an exception.  But in general this could be used 
that way.  And checking for NULL willl be a way of testing whether the 
replacement actually took place.

Thanks,
Dave