我的班级和我们在 Raku(perl6) 中的班级有什么区别? [英] What is the difference between my class and our class in Raku(perl6)?

问题描述

我已经阅读了规范，但我仍然对 my class 与 [our] class 有何不同感到困惑.有何区别以及何时使用?

I've read the spec but I'm still confused how my class differs from [our] class. What are differences and when to use which?

推荐答案

与变量一样，my 在词法上绑定一个名称，而 our 在周围创建一个条目包.

As with variables, my binds a name lexically, whereas our additionally creates an entry in the surrounding package.

module M {
    our class Foo {}
    class Bar {} # same as above, really
    my class Baz {}
}

say M::Foo; # ok
say M::Bar; # still ok
say M::Baz; # BOOM!

将 my 用于模块内部的类.当然，您仍然可以通过将这些本地符号标记为 is export 来使这些本地符号可用于导入代码.

Use my for classes internal to your module. You can of course still make such local symbols available to importing code by marking them is export.

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