Question

Just curious.

Things like

ClassName * singleton

Here static in the sense that all members of the class share it

Answer 1

They sure can! Declare your static variables outside the implementation block in the .m file. I do this all the time when I create singletons.

--- MySingleton.h ---

@interface MySingleton : NSObject
...
@end


--- MySingleton.m ---

#include "MySingleton.h"

static MySingleton *sharedSingleton = nil

@implementation
...
@end