Build a list of constants variable from other constants

Question

I\'ve just read all of objective-c global constants variables Q&A but I found them inappropriate to my problem.

I need a list of variable like t

Answer 1

I don't have access to a MAC now ... can you just try this..

in .h

NSString *baseURLString;
extern NSString *const baseURL;

in .m

baseURLString= @"http://example.org";
NSString *const baseURL= [NSString stringWithFormat:"%@", baseURL];

I am not sure of this will work..

And also have you seen this answer at SO ... it has all the approaches I know of... Constants in Objective-C

Answer 2

I know it's old-fashioned but I'd just use preprocessor macros and let constant string concatenation handle it.

#define baseURL @"http://example.org"
#define mediaURL baseURL@"/media/"

Answer 3

#define API_ROOT_URL @"https://www.example.org/api"
NSString *const OAuthUrl = API_ROOT_URL @"/oauthToken";

See also.