方法............................................................................................................26 §3.4 存取控制........................................................................................................................27 §3.6 元类 ...............................................................................................................................29 §3.7 Ruby 的动态性 ..............................................................................................................30 §3.8 变量 ...............................................................................................................................31 §3.8.1 局部变量.............................................................................................................31 §3.8.2 实例变量.............................................................................................................32 §3.8.3 类变量.................................................................................................................33 §3.8.4 全局变量.............................................................................................................33 §3.8.5 常量.....................................................................................................................34 §3.8 与定义有关的操作........................................................................................................35 §3.8.1 alias .....................................................................................................................35 §3.8.2 undef ...................................................................................................................36 §3.8.3 defined? ...............................................................................................................37 第四章 基本类型.............................................................................................................................40 §4.1 Array ..............................................................................................................................40 §4.2 Hash ...............................................................................................................................41 §4.3 Number ..........................................................................................................................42 §4.4 String ..............................................................................................................................43
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§4.5 Range .............................................................................................................................44 §4.6 Symbol ...........................................................................................................................45 §4.7 正则表
达式......................................................................................................