Where's the best place to store constants in an iOS app?

Question

I\'m developing an app just now that fetches resources from a JSON API.

all of the resources have the same base URL:

http://api.mysite.com/resources.         


        

Answer 1

Personally I prefer using actual const variables rather than defines.

In a MyConstants.m file I have:

NSString *const kXYMySiteBaseURL = @"http://api.mysite.com/";
NSString *const kXYSomeOtherURL = @"http://www.google.com/";

where XY is my initials or some other "unique" prefix to avoid collisions with other constants.

Then I have a MyConstants.h file like this:

extern NSString *const kXYMySitBaseURL;
extern NSString *const kXYSomeOtherURL;

Depending on how many files need to access these constants, I might include it in the precompiled header like ColdFusion suggests in his answer.

This is how Apple defines their constants in most of the Core frameworks.