Making some code only run once

I have some code that I would like to run only once in my MainViewController. It should run every time the user starts the app, but only after the MainViewController has loaded.

I don't want to run it in -(void)applicationDidFinishLaunching:(UIApplication *)application.

Here's the idea I had:

MainViewController.h

@interface IpadMainViewController : UIViewController <UISplitViewControllerDelegate> {
    BOOL hasRun;
}

@property (nonatomic, assign) BOOL hasRun;

MainViewController.m

@synthesize hasRun;

-(void)viewDidLoad {
    [super viewDidLoad];
    if (hasRun == 0) {
        // Do some stuff
        hasRun = 1;
    }
}

Any ideas?