本文原自 iOS 中级面试题
http://mrpeak.cn/ios/2016/01/07/push
Day 1. ARC, Automatic Reference Counting
Apple, Transitioning to ARC Release Notes
https://developer.apple.com/library/ios/releasenotes/ObjectiveC/RN-TransitioningToARC/Introduction/Introduction.html
Wiki, Automatic Reference Counting
https://en.wikipedia.org/wiki/Automatic_Reference_Counting
理解 Objective-C 的 ARC
http://www.oschina.net/translate/objc-automatic-reference-counting-in-xcode-explained
自動引用計數
https://tommy60703.gitbooks.io/swift-language-traditional-chinese/content/chapter2/16_Automatic_Reference_Counting.html
Swifter, @AUTORELEASEPOOL
http://swifter.tips/autoreleasepool/
Day 2. assign vs weak, __block vs __weak
被无数人写过的assign，retain，strong，weak，unsafe_unretained，还有copy
http://www.jianshu.com/p/4a1d1921284b
__weak与__block区别
http://honglu.me/2015/01/06/weak%E4%B8%8Eblock%E5%8C%BA%E5%88%AB/
Day 3. Atomic
Properties Are Atomic by Default
https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ProgrammingWithObjectiveC/EncapsulatingData/EncapsulatingData.html
iOS基礎之atomic與nonatomic，assign,copy與retain的定義和區別
http://fanli7.net/a/bianchengyuyan/C__/20130618/372617.html
Objective-C——atomic一定是线程安全的吗？
http://blog.csdn.net/chenyufeng1991/article/details/49687215
Day 4. Retain cycle
Swift 自動引用計數 類別實例之間的迴圈強參考
https://tommy60703.gitbooks.io/swift-language-traditional-chinese/content/chapter2/16_Automatic_Reference_Counting.html#strong_reference_cycles_between_class_instances
iOS blocks - 三個會造成retain cycle的anti patterns
http://popcornylu.blogspot.tw/2012/02/3-anti-patterns-which-lead-memory-leaks.html
Day 5. Runtime
Objective-C Runtime Programming Guide
https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/ObjCRuntimeGuide/Introduction/Introduction.html
iOS runtime学习笔记
http://www.jianshu.com/p/970ae3bac1ef
理解 Objective-C Runtime
http://justinyan.me/post/1624
Day 6. +(void)load; +(void)initialize;
Objective C类方法load和initialize的区别
http://www.cnblogs.com/ider/archive/2012/09/29/objective_c_load_vs_initialize.html
Day 7. Method swizzling
Objective-C的hook方案（一）: Method Swizzling
http://blog.csdn.net/yiyaaixuexi/article/details/9374411
Objective-C Runtime 运行时之四：Method Swizzling
http://southpeak.github.io/blog/2014/11/06/objective-c-runtime-yun-xing-shi-zhi-si-:method-swizzling/
Day 8. UIView與CALayer
详解 CALayer 和 UIView 的区别和联系
http://www.cocoachina.com/ios/20150828/13244.html
KKBOX iOS/Mac OS X 基本開發教材 CALayer
https://zonble.gitbooks.io/kkbox-ios-dev/content/core_animation/calayer.html
Day 9. UIImageView 圓角
iOS 高效添加圆角效果实战讲解
http://www.jianshu.com/p/f970872fdc22
Day 10. drawRect
iOS重绘机制drawRect
http://blog.csdn.net/nyh1006/article/details/38899251
内存恶鬼drawRect
http://bihongbo.com/2016/01/03/memoryGhostdrawRect/
Day 11. 研究Alamofire
GitHub Alamofire/Alamofire
https://github.com/Alamofire/Alamofire
对于AlamoFire几点思考，AlamoFire几点思考
http://www.zendei.com/article/4319.html
Alamofire 源码赏析（一）基础篇
http://liuduo.me/2015/11/17/Alamofire-%E6%BA%90%E7%A0%81%E8%B5%8F%E6%9E%90%EF%BC%88%E4%B8%80%EF%BC%89%E5%9F%BA%E7%A1%80%E7%AF%87/
优秀源码阅读：Swift网络库Alamofire
http://www.cocoachina.com/ios/20151118/14240.html
从 Alamofire 源码学习 Swift
http://broccoliii.me/2016/05/07/Learning_Swift_from_Alamofire_source/
Day 12. Instrument
Instruments Tutorial with Swift: Getting Started
https://www.raywenderlich.com/97886/instruments-tutorial-with-swift-getting-started
Day . GCD
KKBOX GCD（Grand Central Dispatch）
https://zonble.gitbooks.io/kkbox-ios-dev/content/threading/gcd.html
