anchor.diff:  
   |设计模式
   |
  -* https://detail.tmall.com/item.htm?spm=a1z10.3-b.w4011-7992896792.27.c32950bQHTzS1&id=37058212911&rn=83af5bfa138538cd6ee2ebab3c5785f3&abbucket=1[Head First设计模式^]
  +* http://shop.oreilly.com/product/9780596007126.do[Head First Design Patterns^], https://detail.tmall.com/item.htm?spm=a1z10.3-b.w4011-7992896792.27.c32950bQHTzS1&id=37058212911&rn=83af5bfa138538cd6ee2ebab3c5785f3&abbucket=1[中文^]
   * http://www.tup.tsinghua.edu.cn/booksCenter/book_02665301.html[大话设计模式^]
   |http://www.golden-book.com/product/getnewProductInfodatafortxt.asp?id=10421[设计模式：可复用面向对象软件的基础^]
   
  
positive.code: 
  * https://www.pearson.com/us/higher-education/program/Horstmann-Core-Java-Volume-I-Fundamentals-10th-Edition/PGM178934.html[Core Java,Volume I^]， http://www.golden-book.com/product/getnewProductInfodatafortxt.asp?id=1762429[中文^]
  * https://www.pearson.com/us/higher-education/program/Horstmann-Core-Java-Volume-II-Advanced-Features-10th-Edition/PGM158431.html[Core Java,Volume II^]， http://www.golden-book.com/product/getnewProductInfodatafortxt.asp?id=1765355[中文^]
  * http://isbn.directory/book/9780596009205[Head first Java^]
  * http://www.golden-book.com/product/getnewProductInfodatafortxt.asp?id=707868[Java编程思想^]
  * http://www.oracle.com/technetwork/java/javamagazine/index.html[Oracle Java Magazine 图书部分^]
  
  其他书籍：
  
  * http://isbn.directory/book/9780134685991[Effective Java^]
  
  |Kotlin
  |
  
negative.code: 书籍：
  
  * http://www.ituring.com.cn/book/1841[第一行代码——Android^]
  * https://www.bignerdranch.com/books/android-programming/[Android Programming^], http://www.ituring.com.cn/book/1976[中文^]
  * http://www.broadview.com.cn/book/492[疯狂Android讲义^]
  * http://www.tup.tsinghua.edu.cn/bookscenter/book_04578801.html[Android 4高级编程^]
  
  