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iOS Build a Simple iPhone App (iOS7) Refactoring into a Model Creating a Custom Class

Kyle Eames
Kyle Eames
1,873 Points
Posted by Kyle Eames
Kyle Eames
1,873 Points

I don't understand why this doesn't work

Why doesn't this work?

return self.quotes[arc4random_uniform(self.quotes.count)];

3 Answers

agreatdaytocode
agreatdaytocode
24,757 Points 
Try this: 

- (IBAction)buttonPressed {
    int random = arc4random_uniform(self.predictions.count);
    self.predictionLabel.text = [self.predictions objectAtIndex:random];
}
Kyle Eames
Kyle Eames
1,873 Points
Kyle Eames
Kyle Eames
1,873 Points

Thanks for answering. That was actually a code challenge, and it drove me up a wall because I couldn't see why that wasn't working, but if my memory serves me correctly, I had changed it to

return [self.quotes objectAtIndex: arc4random_uniform(self.predictions.count)];

and it worked. I have no idea why this worked, and the other didn't. The both say the same thing. Any ideas?

agreatdaytocode
agreatdaytocode
24,757 Points

One of them has quotes.count the other is predictions.count. Both would work, however I think the challenge is asking for the predictions.count

Kyle Eames
Kyle Eames
1,873 Points
Kyle Eames
Kyle Eames
1,873 Points

Oh, yeah! I remember now. I did get the contents of the tutorials and the code challenges confused. Thanks!