Question

In iOS 5, “retain” and “release” are not supported any more. Instead “strong” and “weak” are the new way.

iOS 4 code:

@property(nonatomic, retain)
@property(nonatomic, assign)

iOS 5 code:

???
???

Answer 1

“In iOS 5, retain release are not supported any more.” They are, just not when using ARC.

When using ARC, -[<NSObject> retain] is a no-op.

For properties, you can use strong if using ARC but that’s not required (you can use retain too if you like). strong and retain are identical:

@property(nonatomic, strong)
@property(nonatomic, assign)

Just make sure you are consistent (don’t use both strong and retain in the same project).