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interview-series's Introduction

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iOS初级到中级的进阶之路~

  • 一个NSObject 对象,占用多少内存
  • 对象方法 与 类方法的存放在哪
  • 什么是isa指针
  • 什么是meta-class
  • megsend 是如何找到方法的
@implementation MNSubclass

- (void)compareSelfWithSuperclass{
    NSLog(@"self class = %@",[self class]);
    NSLog(@"super class = %@",[super class]);
}
@end
  • 输出的结果是什么
  • 。。。

友情tips:如果上诉问题你都知道答案,或者没有兴趣知道,就可以不用继续往下看了,兴趣是最好的老师,如果没有兴趣知道这些,往下很难读得进去~


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interview-series's Issues

“isa&&Class&&meta-class 初步认识” 一文中可能有几处错误

在这里学到了很多东西,十分感谢作者。

在看 “isa&&Class&&meta-class 初步认识” 时,我认为有几处错误,不知是否我的理解有问题:

140 行:[MNSubclass superClassMethod]; // 移到 144 行的下面
232 行:[subclass subclassInstanceMethod]; // [subclass compareSelfWithSuperclass];
253 行:通过isa找到了 // 通过superclass找到了(下面的图里也写错了)

PS:另外这篇文章的小错误(如错别字),相对其他几篇来说有些多,虽然大多不影响理解,但希望作者有时间可以看一下。。

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