Question

Here is the method declaration midway in Apple’s documentation:
Learning Objective-C: A Primer

- (void)insertObject:(id) anObject atIndex:(NSUInteger) index

Why is there no * right after NSUInteger. I thought all objects were pointer types and all strongly typed pointers had to have a * character after it.

Answer 1

NSUInteger is not an object type, it is a typedef to unsigned int.

The only reason that you would actually want to use a * in this context would be if you wanted to get the address of an int and store something in it. (Some libraries do this with error messaging). An example of this:

-(void) methodName: (NSUInteger *) anInt {
    *anInt = 5;
}

NSUInteger a;
[obj methodName: &a]; //a is now 5