Question

I’m trying to get a double value from a dictionary. How can I accomplish this in objective-c?

Answer 1

Dave’s response to your previous question holds true for this, as well. To store a double value in an NSDictionary, you will need to box it in an NSNumber.

To set a double value in the dictionary, you’d use code like the following:

[someDict setObject:[NSNumber numberWithDouble:yourDouble] forKey:@"yourDouble"];

and read it back using the following:

double isTrue = [[someDict objectForKey:@"yourDouble"] doubleValue];