It doesn't matter how you instantiate it, that fun...

# announcements

[Ruckus]

It doesn't matter how you instantiate it, that function says N is a BaseNavigator. Unless BaseNavigator is a subclass of NavigationController (it's not, you have it the other way around), that won't compile.

[yuriy.stetsyk]

Doesn't N : BaseNavigator states that N should inherit BaseNavigator?

[Ruckus]

Yes, but your navigation is specifically a NavigationController, and you can't guarantee the factory passed into f is generic over NavigationController, only BaseNavigator.

[Ruckus]

@Andreas Sinz showed a perfect example of where that could fail (I was about to type my own here when I saw that one)

[Ruckus]

For your function to work without changing the navigation, you'd need something like:

fun <F, V, P> f(factory: NavigationFactory<F, V, P, NavigationController>)
        where F : Fragment,
              F : BaseView<V, P>,
              V : BaseView<V, P>,
              P : NavigatorPresenter<V, P, NavigationController>{
    factory.with(navigation)
}