Where do I have to declare static variables?

Question

i.e. I want to bring this in my code:

static BOOL MyConstantBool = YES;

Must it be before or after @implementation? Are there rules where t

Answer 1

If it's after the @implementation block, then you can't use it in the @implementation block (unless it's been forward declared somewhere else using extern). Here's how I do it:

//Constants.h
extern BOOL MyConstantBool;
extern NSString* MyConstantString;


//Constants.m
#import "Constants.h"
BOOL MyConstantBool = YES;
NSString* MyConstantString = @"Hello, world!";


//SomeOtherFile.m
#import "Constants.h" 
//you can now use anything declared in Constants.h