Swift 1.2 redeclares Objective-C method

Question

I just updated from swift 1.1 to swift 1.2 and get compiler Error:

Method \'setVacation\' redeclares Objective-C method \'setVacation:\'

Here

Answer 1

As noted by @Kirsteins, Swift now detects conflicting symbols between Swift and Obj-C, and swift symbols that would cause Obj-C grief. In addition to the answer given, you can avoid this in general by specifying a required label for the additional types, thus changing the call signature:

import Foundation

extension NSObject {
    func foo(d:Double, i:Int) { println("\(d), \(i)") }
    func foo(withInt d:Int, i:Int) { println("\(d), \(i)") }
}

let no = NSObject()
no.foo(withInt:1, i: 2)

Beyond that though, and to answer your immediate question, you are trying to apply Obj-C idioms to Swift. What you really want, is to either implement didSet (most likely), or possibly set:

class WhatIDidLastSummer {

    var vacation:Bool = false {
        didSet {
            // do something
        }
    }

    var staycation:Bool {
        get { return true }
        set {
            // do something
        }
    }

}