How can I use an integer value as 'key' to set value in NSMutableDictionary?

Question

How can I use an integer value as 'key' to set a float value in NSMutableDictionary ?

Answer 1

As NSDictionarys are only designed to deal with objects, a simple way to do this is to wrap the integer and float in a NSNumber object. For example:

NSMutableDictionary *testDictionary = [[NSMutableDictionary alloc] init]; [testDictionary setObject:[NSNumber numberWithFloat:1.23f]                    forKey:[NSNumber numberWithInt:1]]; NSLog(@"Test dictionary: %@", testDictionary);  [testDictionary release]; 

To extract the relevant value, simply use the appropriate intValue, floatValue, etc. method from the NSNumber class.