Objective C - Assign, Copy, Reta2016-06-16 本文已影响277人 deactivateuser Objective-C ARC: strong vs retain and weak vs assign 被无数人写过的assign，retain，strong，weak，unsafe_unretained，还有copy Objective C - Assign, Copy, Retain Memory Management What is the difference between strong, retain, nonatomic, etc., in the Objective-C (iOS) property?
