cls和selfcls 指向同一个地址(RuntimeViewController类对象)。
按照oc的类结构,[self class]不是应该指向RuntimeViewController的元类吗?
PHPz2017-05-02 09:28:54
Look at this and you will understand
http://xiongzenghuidegithub.github.io/blog/2016/05/17/runtime-part7-object-getclass-yu-object-class-de-qu-bie/
phpcn_u15822017-05-02 09:28:54
//实例对象调用class时返回isa指向的objc_object
-class
{
return (id)isa;
}
//类对象调用class时返回类对象自己
+class
{
return self;
}
//取自Object.h Object.m