__strong and __weak keyword placement - Objective-C

Question

The compiler seems to have no problem with the two following declarations:

NSObject * __weak weakThing;
__weak NSObject *anotherWeakThing;

Answer 1

There is a difference if you have

 __weak NSObject *someWeakThing, *someSupposedlyButNotReallyWeakThing;

because the __weak will only confusingly apply to the first variable. (this is a similar mistake to the rookie

NSObject* one, two;

which of course won't work as "expected", either).