I first read about this idea of namespacing using enums in the article Easy Namespacing in Swift by @khanlou.

For example, for my library Zhi,

I have a file which only has these 2 lines to create a "namespace":

public enum Zhi {
}

Then in other files, I can do this to add to the namespace:

public extension Zhi {
    class StyleParser {
        //...
    }
}

As mentioned in the article, a major limitation is it doesn't work for protocols. So this doesn't work:

public extension Zhi {
    protocol P {}
}

But otherwise, using enums as a namespace is a great way to organize your code.

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