6 ms·

random question: doesn't ObjC define 'nil' (or self?) as 'void*'? I did some ObjC coding 2 years ago and I remember seeing something like this and thinking: oh

• rdouble 13y ago
  Nil is (void *)0.
• geon 13y ago
  The ’id’ type is a void *. It is used extensively, whenever there are multiple possible return types. Even where inheritence could have been used to make it more speciffic. For example, ’alloc’ and all ’init’ returns it.
  • 0x09 13y ago
    > The ’id’ type is a void . non typedef struct objc_class *Class; typedef struct objc_object { Class isa; } *id; with struct objc_class { Class isa; /* objc v1 members omitted */ };