Swift: C++ friend Equivalent?

Question

I have a structure similar to the following:

class Foo{
    class Bar{ ... }
    private class Baz{ ... } 
}

Foo and Bar need access to Baz, but Baz needs to remain private to both the module and and other modules importing it.

Questions:

Is there any way to share Baz to Foo and Bar?'
Is there any other class structure that I could use that would allow the wanted access?

@imike I have never heard of `fileprivate`. Thanks! You could post your comment as an answer... — Captain Hatteras, Dec 19 '21 at 22:24
To be honest, `friend` Is pretty discouraged in C++ to begin with. It just adds complexity and rigidity without much “real benefit” — Alexander, Dec 19 '21 at 22:45

score 3 · Answer 1 · answered Dec 20 '21 at 00:20

You don't need to nest the classes to achieve this.

class Foo {
    // entire module can access
}

class Bar {
    // entire module can access
}

private class Baz {
    // only objects in this file can access
}

If, however, you want to nest the types then you can make use of fileprivate.

class Foo {
    class Bar {}
    fileprivate class Baz {}
}

Swift: C++ friend Equivalent?

1 Answers1