在Ruby模块中的私有类（不是类方法）？ [英] Private class (not class method) in a Ruby module?

问题描述

我是Ruby的新手（有Python，C ++和C的经验）。我需要创建一个只有被模块中的其他类和方法使用的类。在Python中，我将其称为__classname。我会在C ++中使用一个空的typedef。如何在Ruby中做这个（或者我是在错误的树上，而不是这样做的Ruby方式？）

I'm new to Ruby (experienced with Python, C++ and C). I need to create a class that is only to be used by other classes and methods in a module. In Python, I'd just call it __classname. I'd use an empty typedef in C++. How do I do this in Ruby (or am I barking up the wrong tree and not doing this the "Ruby way"?)

推荐答案

p>我还没有看到这样的概念到目前为止在Ruby，但我想你可以模拟，通过创建私有方法，将返回一个类创建为一个局部变量（记住在Ruby中，一个类是一个对象，就像任何其他，并且可以在方法中实例化并由它返回）。

I haven't seen such concept so far in Ruby, but I guess you could simulate that by creating private method which would return a class created as a local variable (remember that in Ruby, a class is an object just like any other, and can be instantiated in a method and returned by it).

BTW，即使Ruby中的私有方法不像其他语言中的私有方法 - 他们使用 send 方法。但这样做意味着你知道你在做什么。

BTW, even private methods in Ruby aren't as private as in other languages - you can always access them using send method. But doing that implies you know what you are doing.

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