OC点语法的陷阱

 1 #import <Foundation/Foundation.h>
 2
 3 //类的声明
 4 @interface Person : NSObject{
 5     NSString *_name;//属性
 6 }
 7 - (void)setName:(NSString *)name;//setter
 8 - (NSString *)name;//getter
 9 @end
10
11 //类的实现
12 @implementation Person
13 - (void)setName:(NSString *)name{
14     //self.name=name;//点语法陷阱,相当于调用setName
15     _name=name;
16 }
17 - (NSString *)name{
18     //return self.name;//点语法陷阱,也是重复调用了getter方法
19     return _name;
20 }
21 @end
22
23 int main(int argc, const char * argv[]) {
24     @autoreleasepool {
25         Person *p=[[Person alloc]init];
26         p.name=@"张三";//赋值
27         NSLog(@"%@",p.name);//读取值
28     }
29     return 0;
30 }