Question

I use a lot of NSString constants like:

static NSString * const REAColorPlaybackBackgroundKey = @"REAColorPlaybackBackgroundKey";
static NSString * const REAColorPlaybackForegroundKey = @"REAColorPlaybackForegroundKey";

There’s unnecessary duplicity and no easy way to rename them. Xcode’s Refactor command doesn’t work here and Edit All in Scope can’t handle it either. Is there a smarter way to define NSString constants?

Answer 1

Sure, try something like this:

#define STRING_CONSTANT(PREFIX, NAME, SUFFIX) static NSString *const PREFIX ## NAME ## SUFFIX = @"" #PREFIX #NAME #SUFFIX

// usage
STRING_CONSTANT(REA, ColorPlaybackBackground, Key);
STRING_CONSTANT(REA, ColorPlaybackForeground, Key);

Obviously, you can make PREFIX and SUFFIX constant instead of parameters if you’d prefer.