How to create constant NSString by concatenating strings in Obj-C?

Question

I\'m trying to instanciate a constant NSString by concatanating other NSString instances.

Here is what I\'m doing in my implementation file :

static          


        

Answer 1

static const objects value is determined at compile-time so you indeed cannot add any method calls to their initialization. As an alternative you can do the following:

static NSString *const MY_CONST = @"TEST";
static NSString *MY_CONCATENATE_CONST = nil;

if (nil == MY_CONCATENATE_CONST)
   MY_CONCATENATE_CONST = [NSString stringWithFormat:@"STRING %@", MY_CONST];