蓝少泽

摘要： 18.Understanding self（self变量）：#import "MrHiggieIsAnAmazingPhoneAndIsLovedByEveryone.h"@implementation MrHiggieIsAnAmazingPhoneAndIsLovedByEveryone-(void)speak;{ NSLog(@"%@ says Hello There!", self);//用self变量，输出的是类对象在内存中的地址}@end19.Logging a property instead of self(用一个属性代替self变量): 阅读全文