Question

I am filling in some objective-c stuff that has been dropped in my lap so sorry if this is simple question. I have the following:

[self.distancesArray addObject:[NSNumber numberWithDouble:.25]];
[self.distancesArray addObject:[NSNumber numberWithDouble:3.0]]
[self.distancesArray addObject:[NSNumber numberWithDouble:10.0]];

NSLog(@"here is value: %.2f",[[self.distancesArray objectAtIndex:2] doubleValue]);

outputting:

2012-05-07 19:15:29.714 AtFoodie[30989:11903] here is value: 0.00

How would I get the value of 10?

thx

Answer 1

Most likely reason is that your distancesArray is actually nil—it’s never being initialized. So your -addObject: calls are going to nil and falling down a hole, and your -objectAtIndex: call is doing likewise and returning nil (i.e. 0).