ios5 ARC机制介绍和使用

参考http://www.yifeiyang.net/development-of-the-iphone-simply-1/ 　　http://blog.csdn.net/diyagoanyhacker/article/details/7069889 http://developer.apple.com/library/ios/#releasenotes/ObjectiveC/RN-Transit

>>阅读原文<<