Table of contents Rubynotebook RubyBasic Whats Ruby Def a func Play with Class Play with Array Play with operational character Play with tri-expression Play with Char Diff between '' and"" Play with Hash AtoItoA Play with Class 2 Play with module Condition Expression Loop Exception Ruby基础教程第五版笔记Programming 1.Ruby初探 2.便利的对象 3.创建命令 4.对象、变量和常量 5.条件判断 6.循环 7.方法 8.类和模块 9.运算符 10.错误处理与异常 11.块 12.数值类（Numeric） 13.数组类（Array） 14.字符串类 15.散列类（Hash）