__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;

Is there a difference between the two? Is the behavior like the const keyword?

I ask because Xcode's warning generally suggest ...

SomeDataType * __weak / __strong

... when you've goofed something up. So I've tried to follow this pattern, but wondered if there was a difference at all.