swift setter causing exc_bad_access

Question

I have a simple class below

import Foundation

public class UsefulClass: NSObject{
    var test:NSNumber{
        get{return self.test}
        set{
                


        

Answer 1

Swift variables are synthesized properties by default. In the most cases this is sufficient (it's recommended to prefer Swift types)

var test: Int

override init() {
    super.init()
    test = 5
}

If you need to do something after a variable is set, use

var test: Int {
    didSet{
        println("\(oldValue) - \(newValue)")
    }
}

your code sets the variable permanently by calling the setter which calls the setter which …