Making some code only run once

Question

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 loa

Answer 1

I don't see any problem with that code. I like using a BOOL (as you did) and then assigning either YES/NO or TRUE/FALSE just so that the code reads more nicely. I would assign TRUE to firstRun in didFinishLaunching, and set it FALSE after the code executes. In my code these type of conditionals usually look like this:

@synthesize firstRun;

-(void)viewDidLoad {
   [super viewDidLoad];
    if (firstRun) {
        // code to run only once goes here
        firstRun = FALSE;
    }
}