Forum

As far as the iPhone is concerned, NSInteger and int are interchangable. Take a look at the definition in NSObjCRuntime.h:

#typedef int NSInteger;
#typedef unsigned int NSUInteger;

Obviously from this, NSInteger and int are one and the same.

NSNumber is very different as it provides a way for holding a value as any numeric type, not just ints, but char, short int, long int, long long int, float, double and BOOL. It's your quintessential Swiss Army knife of numeric types. 

This might be a very obvious problem, but I can't seem to find an answer to it and this thread seems to be addressing the differences between int and NSInteger…

I created a class that accepts any object (id).  When I try to pass it a number (like '2') it gives me the following warning:

warning: passing argument # of '…' makes pointer from integer without a cast

Is there a way I should be passing in a number so that it is casted as int/NSInteger?

Thanks in advance.