When to use static string vs. #define

Question

I am a little confused as to when it\'s best to use:

static NSString *AppQuitGracefullyKey = @\"AppQuitGracefully\";

instead of

Answer 1

See "static const" vs "#define" vs "enum". The main advantage of static is type safety.

Other than that, the #define approach introduces a flexibility of inline string concatenation which cannot be done with static variables, e.g.

#define ROOT_PATH @"/System/Library/Frameworks"
[[NSBundle bundleWithPath:ROOT_PATH@"/UIKit.framework"] load];

but this is probably not a good style :).