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
What is the difference between strong, retain, nonatomic, etc., in the Objective-C (iOS) property?
Objective C - Assign, Copy, Retain
原文作者：deactivateuser
原文地址: https://www.jianshu.com/p/a64809bba109
本文转自网络文章，转载此文章仅为分享知识，如有侵权，请联系博主进行删除。
原文地址: https://www.jianshu.com/p/a64809bba109
本文转自网络文章，转载此文章仅为分享知识，如有侵权，请联系博主进行删除。
