作为第1章第2节简单示例的第三部分，讨论了全局项、映射字段、数据声明和作为占位符的值类型——这四个基本概念。 Read More
1.Because all the classes declared within a module are by definition declared within the lexical scope of the module, it is only logical that the relationship between the module and the classes declar... Read More