10-self方法使用注意

#import <Foundation/Foundation.h>

@interface Person : NSObject
- (void)test;
+ (void)test;

- (void)test1;
+ (void)test2;


- (void)haha1;
+ (void)haha2;


@end

@implementation Person
- (void)test
{
    NSLog(@"调用了-test方法");
   
    // 会引发死循环
    //[self test];
}

+ (void)test
{
    NSLog(@"调用了+test方法");
   
    // 会引发死循环
    //[self test];
}

- (void)test1
{
    [self test]; // -test
}

+ (void)test2
{
    [self test]; // +test
}

- (void)haha1
{
    NSLog(@"haha1-----");
}


void haha3()
{
   
}

+ (void)haha2
{
    // haha3();
    [self haha3];
    // [self haha1];
}
@end

int main()
{
    [Person haha2];
    //Person *p = [Person new]; 调用对象的方法必须用指针
   
    //[p test1];
    return 0;
}