A declaration cannot be both 'final' and 'dynamic' error in Swift 1.2

Question

The declaration of value below

import Foundation

class AAA: NSObject {
    func test2() {
        self.dynamicType
    }
}
extension AAA {
    stat         


        

Answer 1

I just stumbled over the same issue with a different cause and would like to post it here for other people experiencing the same useless error message.

A final class which overrides a computed variable defined in an extension also causes this error. It works for functions though and thus looks like a compiler bug.

// at line 0: a declaration cannot be both 'final' and 'dynamic'

import UIKit

extension UIViewController {
    var test: Int { return 0 }
}

final class TestController: UIViewController {
    override var test: Int { return 1 }
}