ruby

官网

http://www.ruby-lang.org/en/

https://ruby-china.org/

DOC

http://ruby-doc.com/docs/ProgrammingRuby/

http://ruby-doc.org/core-2.2.1/

六个最酷的Ruby on Rails项目

https://www.ctocio.com/ccnews/20453.html

Rake:

Ruby中任务构建工具rake的入门

https://www.cnblogs.com/znsongshu/p/7685030.html

Programming Ruby

http://shouce.jb51.net/ruby/ 

Ruby China

https://ruby-china.org/wiki

Ruby的class中定义以self.开头的方法有何不同

https://segmentfault.com/q/1010000000764286

ruby的class << self, 及其class

http://www.360doc.com/content/15/0918/16/15758456_499936444.shtml