How to define a BOOL constant?

Question

I know how to do it for a float:

#define kMyConstant 1.0f

but how could I do that fora BOOL value?

Answer 1

#define kMyConstantBOOL YES

Or

static BOOL MyConstantBool = YES;

Answer 2

Here's an example:

#define kMyConstant      YES
#define kMyOtherConstant NO

Answer 3

I would do it differently:

enum { MyConstantBool = YES };

It's a constant, it doesn't take up storage space.