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........................................................................................................................27
3.8 赋值和条件运算符........................................................................................................28
3.9 条件判断语句................................................................................................................30
一. 单行 if（如果） 语句...................................................... .....................................30
二. 多行 if 语句...........................................................................................................30
三. unless(除非) 条件语句：........................................................................................30
四. case分支条件语句....................................................................................................31
3.10 循环语句......................................................................................................................32
一. while（当…） 循环................................................................................................32
二. 单行 while 循环.....................................................................................................32
三. until（直到…） 循环...........................................................................................32
四. for…in 循环.............................................................................................................33
五．break ， next & redo & retry....................................................................33
六. 求50以内的素数。................................................................................................36
七. times , upto , downto , each ,step..............................................................................37
3.11 异常与线程..................................................................................................................38
3.12 一个综合小练习..........................................................................................................39
第四章 一切都是对象.................................................................................................................40
4.1 两种思维方式................................................................................................................40
4.2 对象...............................................................................................................................41
4.3 封装...............................................................................................................................43
开源文档：Ruby 语言入门教程 v1.0
第 2 页
4.4 继承...............................................................................................................................45
4.5 多态...............................................................................................................................47
第五章...........................................................................................................................................48
5.1 为什么是Ruby？...........................................................................................................48
5.2 Ruby会长久么？...........................................................................................................49
5.3 详解变量—— 动态类型..............................................................................................51
5.4 蓝图可以改变吗？ ——动态语言............................................................................55
5.5 一些编码建议.............................................................................................................57
第六章 深入面象对象...............................................................................................................61
6.1 重载？重写....................................................................................................................61
6.2 增强父类方法................................................................................................................65
6.3 实例变量、类变量、类方法........................................................................................67
6.4 单例方法........................................................................................................................71
6.5 访问控制........................................................................................................................73
第七章...........................................................................................................................................79
7.1 模块...............................................................................................................................79
7.2 命名空间........................................................................................................................80
7.3 糅和(Mix-in) 与多重继承............................................................................................83
7.4 require 和 load..............................................................................................................86
第八章...........................................................................................................................................88
8.1 再说数组........................................................................................................................88
8.2 再说字符串....................................................................................................................93
8.3 正则表达式....................................................................................................................97
8.4 迭代器、代码块、闭包..............................................................................................103
第九章 元编程.......................................................................................................................109
小跋.............................................................................................................................................112 ...展开收缩
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