标签：知识点 csdn cal any instance UNC isa obj rac
id _objc_rootInit(id obj)
{
// In practice, it will be hard to rely on this function.
// Many classes do not properly chain -init calls.
return obj;
}
参考：https://blog.csdn.net/qqq274628593/article/details/53023492
标签：知识点 csdn cal any instance UNC isa obj rac
原文地址：https://www.cnblogs.com/mamamia/p/12161833.html
