Is there a way to tell XCode to insert certain variables or constants into your project at compile time, for you to use in your code? Specifically, I'm talking about iOS projects, so I don't have the option to use command line arguments, I think.
Why would I need this, you ask? Well say that for certain cells in a table view, I'd like to add a different subtitle text, because it helps me pick the right cell during development. Something like this would be awesome:
if (MY_COMPILE_TIME_BOOL_CONST) {
cell.subtitle.text = [NSString stringWithFormat:@"Contains %i items", count];
} else {
cell.subtitle.text = @"";
}
But there are lots of other places this would come in handy. Somehow, when trying to google the answer, I only get to "beginning with XCode tutorials".
Can anyone point towards the magic?
UPDATE: The magic word to google for is "preprocessor macro". Thanks, SO!
If you start your app from XCode you can totally use command line arguments.
You could also add something like DEBUG=1 to the preprocessor macro for the debug configuration. Then you can add preprocessor ifs into your code and the corresponding code will only be compiled in Debug mode.
#if DEBUG
NSLog(@"Foo");
#endif
The latter is what I use every day.