Re: Proper use of #define to aid in compile-time checking of strings (was KVC and KVO for arrays)

FROM : Nick Toumpelis
DATE : Fri Feb 15 22:23:52 2008

On 15 Φεβ 2008, at 5:52 ΜΜ, John Dann wrote:

> If I want to change the name of the NSOutlineView column to which 
> the #define statement referrs at some time in the future, I'll have 
> to change both, and likely forget one.  Is there any way around this 
> without placing the #define in my NSDocument subclass's .h file?


You could define a constant method (like in SmallTalk) in your main 
class, that your categories can call e.g.:

- (NSString *) sourceListColumnID {
   return @"sourceListColumn";
}

This can be called from your categories and you won't have to 
duplicate your constants.

Nick