What does the property “Nonatomic” mean?

Question

What does \"nonatomic\" mean in this code?

@property(nonatomic, retain) UITextField *theUsersName;

What is the difference between atomic an

Answer 1

In addition to what's already been said about threadsafeness, non-atomic properties are faster than atomic accessors. It's not something you usually need to worry about, but keep it in mind. Core Data generated properties are nonatomic partially for this reason.