The runtime the underlying implementation principle: blog.csdn.net/yahibo/arti…

Runtime (a)—— class structure, method structure, method cache, etc. : blog.csdn.net/liujingran_…

OC in the Runtime method cache: www.jianshu.com/p/7cbd77e0a…

Crash collection: www.jianshu.com/p/05aad21e3… Blog.csdn.net/u013602835/… Blog.csdn.net/weixin_3422…