Where is the private interface for my Objective-C class?

Question

The tutorial book I'm reading told me to create a GameViewController file class, which I did, resulting in the following files showing on the left-hand side of Xcode:

GameViewController.h
GameViewController.m

Then just after this part in the book it talks about creating properties in the private interface.

The book is "Learning Objective-C by Developing iPhone Games", and I am now on Chapter 4 - Alien Invaders.

Could you please tell me where the private interface is located?

Answer 1

It’s in the GameViewController.m file (since other classes will include your .h file). Something like

@interface GameViewController ()

@property (assign, nonatomic)   BOOL    showDebugInfo;

@end