responder-test.swift

import UIKit

protocol ResponderTest: class {
    var name: String { get }
    func printName() -> String
}

extension ResponderTest where Self: NSObject {
    func printName() -> String {
        return name
    }
}


class ResponderObject: NSObject, ResponderTest {
    let name = "Jared"
}


let testObject = ResponderObject()
print(testObject.printName())

let sel = Selector("printName")
let responds = testObject.respondsToSelector(sel)
if responds {
    print("It works! 🎉")
}
else {
    print("It doesn't 💀🔥")
}