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Massimo Savino
5,104 PointsWith the NSNumber *fortytwo example shown, where is the pointer in the 2nd line?
The example in the video shown is this:
NSNumber *fortyTwo = @42;
// equal to
[NSNumber numberWithInt:42];
I'm unclear on where the *fortytwo pointer is in the second line of code. What am I missing?
(For reference, these lines are listed in the iOS track : Objective-C : Beyond the Basics section : 'Alloc & init' video, 'Literals - shorthand notation')
4 Answers
Jeroen de Vrind
29,772 PointsI think you're right, it's a bit unclear: In the first line you declare a variable fortyTwo which is a pointer to an NSNumber and you allocate and initialize it with a value of 42, in the second line you call an initializer of NSNumber but there's no assigning to a variable. So i think it has to be: NSNumber *fortyTwo = [NSNumber numberWithInt:42]
Massimo Savino
5,104 PointsThank you Jeroen - that makes a lot more sense the way you've rewritten it! =)
Kristin Day
1,450 PointsThank you! I had the same question!
Jeroen de Vrind
29,772 PointsHi Massimo, I believe @ is a shorthand for a method of NSNumber that assigns the value of an int to an NSNumber object where fortyTwo points to. Grtz, Jeroen