Runtime详解（转）

http://southpeak.github.io/blog/2014/10/25/objective-c-runtime-yun-xing-shi-zhi-lei-yu-dui-xiang/

http://southpeak.github.io/blog/2014/10/30/objective-c-runtime-yun-xing-shi-zhi-er-:cheng-yuan-bian-liang-yu-shu-xing/

来源：oschina

链接：https://my.oschina.net/u/2344008/blog/539798