Apple's example for the rest of us…

gistfile1.txt

if (error) {
    // In your app, handle this error really beautifully.
    NSLog(@"An error occured in %@: %@", NSStringFromSelector(_cmd), error);
    abort();
}

// In your app, handle this error in an awe-inspiring way.
// In your app, masterfully handle this error.
// In your app, handle this error like a pro.
// In your app, handle this error gracefully.
// In your app, handle this error with such perfection that your users will never realize an error occurred.
// In your app, handle this error awesomely.
// In your app, handle this error. Please.
// In your app, this error needs love and care.
// In your app, you should do the Right Thing
// In your app, handle this error appropriately.
// In your app, handle this error beautifully.