//block 分析参考
http://www.jianshu.com/p/51d04b7639f1
//一个死锁的bug
https://straypixels.net/swift-dictionary-locking/
https://elliotsomething.github.io/2017/06/23/%E4%BD%BF%E7%94%A8@synchronized%E7%9A%84%E5%9D%91/
http://www.cocoachina.com/swift/20170112/18574.html
https://ke.qq.com/course/229709
//这篇文章经不起考验，首先setter方法没有验证只是其认为，至少需要查看反汇编进行验证吧
http://www.cocoachina.com/ios/20170825/20376.html
http://www.cocoachina.com/ios/20170810/20206.html
//如何使用lldb生产反汇编
http://www.jianshu.com/p/d417e3038a04
//ARC内存管理实现
http://blog.sunnyxx.com/2014/04/02/objc_dig_arc_dealloc/
https://clang.llvm.org/docs/AutomaticReferenceCounting.html
http://wiki.jikexueyuan.com/project/objc/concurrent-programming/2-4.html
//自动释放池
http://draveness.me/autoreleasepool.html（非常好）
http://www.jianshu.com/p/32265cbb2a26
http://www.cocoachina.com/ios/20150610/12093.html
http://www.jianshu.com/p/03f0c41410d9
http://www.jianshu.com/p/cc3ee2909457
http://blog.sunnyxx.com/2014/10/15/behind-autorelease/
//http://www.cppblog.com/Tim/archive/2012/07/04/181018.html(TLS辅助理解自动释放池）
//runLoop
https://blog.ibireme.com/2015/05/18/runloop/
//runloop vs gcd vs autoreleasepool
http://www.jianshu.com/p/e259bf7ab297
http://www.cnblogs.com/jiangzzz/p/5619512.html
//__weak 实现原理
http://www.cocoachina.com/ios/20170328/18962.html（垃圾只能稍微参考）
https://junyixie.github.io/2017/02/01/Objective-C-weak-关键字-实现-源码分析/（非常不错）
http://www.iosugar.com/2017/06/04/Implementation-of-Weak-Attribute-in-ObjC-Runtime-Part2/
http://www.iosugar.com
http://www.cocoachina.com/ios/20170410/19030.html（非常好）
//atomic noatomic
http://www.jianshu.com/p/b075bfd67899
//ios行为驱动开发
http://www.jianshu.com/p/73f9d719cee4（非常好）
//面试
https://github.com/ChenYilong/iOSInterviewQuestions/blob/master/01《招聘一个靠谱的iOS》面试题参考答案/《招聘一个靠谱的iOS》面试题参考答案（上）.md#2-什么情况使用-weak-关键字相比-assign-有什么不同
//runtime
http://www.jianshu.com/p/50f2bcfc8fb7
//什么是元类
http://www.cocoawithlove.com/2010/01/what-is-meta-class-in-objective-c.html
