摘要： 写如下代码: BOOL flag1 = [[NSObject class] isKindOfClass:[NSObject class]]; BOOL flag2 = [[NSObject class] isMemberOfClass:[NSObject class]]; BOOL flag3 = 阅读全文

摘要： 对于下面的代码，打印的结果是啥 #import "LBStudent.h" @implementation LBStudent - (instancetype)init { self = [super init]; if (self) { NSLog(@"[self class] = %@", [s 阅读全文