swift debugmsg to show the name of the current class

//  Copyright © 2018 hajunho.com All rights reserved.

import UIKit

//Where am I, exactly  ex) "".pwd(self)

//I recommend the codes below to a base view controller

extension String {

    func pwd(_ x: Any)  {

        debugPrint("🍭pwd_", String(describing: x.self))

    }

}