The difference between int and Nsinteger in objective-c

int is a static type

Nsinteger is a dynamic type

Apple's official recommendation is to use Nsinteger, because in Apple's API implementation, Nsinteger is a package that recognizes the number of bits in the current operating system and automatically returns the largest type.

The code defined is similar to the following:

#if __lp64__ | | target_os_embedded | | Target_os_iphone | | Target_os_win32 | | Ns_build_32_like_64

typedef LONG nsinteger;

typedef unsigned long nsuinteger;

#else

typedef INT nsinteger;

typedef unsigned int nsuinteger;

#endif

You usually want the Nsinteger when you don ' t know what kind of processor architecture your code might run on, so Y OU may for some reason want the largest possible int type, which on + bit systems is just an int, while on a 64-b IT system it ' s a long.

The difference between int and Nsinteger in objective-c