iOS Programming Cookbook

How to do it...

1. Create a new Xcode project with the Master-Detail Application template and with name MemoryManagement. Check out the following screenshot:

2. The new project will be created with sample code for a master-detail template app. Open the source file DetailViewController.swift.
3. Add the following class at the top of the file:

      class Child{ 
        var parent: UIViewController? 
      } 

4. Then, in the DetailViewController class, add the following property:

      let child = Child() 

5. Update the viewDidLoad function like this:

 override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. ...