NSArray of weak references (__unsafe_unretained) to objects under ARC

Question

I need to store weak references to objects in an NSArray, in order to prevent retain cycles. I\'m not sure of the proper syntax to use. Is this the correct way?

Answer 1

If you do not require a specific order you could use NSMapTable with special key/value options

NSPointerFunctionsWeakMemory

Uses weak read and write barriers appropriate for ARC or GC. Using NSPointerFunctionsWeakMemory object references will turn to NULL on last release.