In Cocoa do you prefer NSInteger or int, and why?

Question

NSInteger/NSUInteger are Cocoa-defined replacements for the regular built-in types.

Is there any benefit to using the NS* types over the bu

Answer 1

64-bit is actually the raison d'être for NSInteger and NSUInteger; before 10.5, those did not exist. The two are simply defined as longs in 64-bit, and as ints in 32-bit:

#if __LP64__ || NS_BUILD_32_LIKE_64
typedef long NSInteger;
typedef unsigned long NSUInteger;
#else
typedef int NSInteger;
typedef unsigned int NSUInteger;
#endif

Thus, using them in place of the more basic C types when you want the 'bit-native' size.

CocoaDev has some more info.