摘要： a.ARC中不要retain,release,autorelease,dealloc method.创建自动释放池@ autoreleasepool{}。其本质为：本该你去release某个对象的代码，交由编译器去写。b.__weak __strong指明重写修饰对象的getter和setter方法.c.ARC对Core Foundation对象不做处理，想将其与ARC结合，用CFBridgingRetain、CFBridgingRelease、__bridge（transfers a pointer between Objective-C and Core Foundation with n 阅读全文