swiftmultiplatform

Why can't I do this using swift conditionally compiling?

Compiler will show mistakes when I do this:

#if os(iOS)
class AView: UIView {
#else
class AView: NSView {
#endif
    
}

Why can't I do this?

Does it have any methods to do this thing?

Solution

  • Use conditional compiling with a typealias instead:

    #if os(iOS)
typealias ParentView = UIView
#else
typealias ParentView = NSView
#endif

class AView: ParentView {}

    Then you'll be able to extend that type alias.

    Playground