Tag: atomic

The Question : 1871 people think this question is useful What do atomic and nonatomic mean in property declarations? What is the operational difference between these three? The Question Comments : developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/… The Answer 1 1771 people think this answer is useful The last two are identical; “atomic” is the default behavior (note that it

问题内容: What do atomic and nonatomic mean in property declarations? @property(nonatomic, retain) UITextField *userName; @property(atomic, retain) UITextField *userName; @property(retain) UITextField *userName; What is the operational difference between these three? 问题评论: 4   developer.apple.com/library/mac/#documentation/Cocoa/Concept‌​ual/…      Here is answer stackoverflow.com/a/32942413/1961064      @Alex Wayne – i have one problem and i have posted it but no