deinit {
  // perform the deinitialization
}
var counter = 3; // for reference counting
class baseClass {
   init() {
      counter+=1
   }
   deinit {
      counter-=1
   }
}
var base: baseClass? = baseClass()
 
print(counter)
base = nil
print(counter)
var counter = 3; // for reference counting
class baseclass {
   init() {
      counter+=1
   }
   deinit {
      counter-=1
   }
}
// Maka hasil nya 4-4
var base: baseclass? = baseclass()
 
 
print(counter)
print(counter)