Re: How to check if a custom class has a private object set?

I have a class C with instance function F() and static function S().

I would call:

var c = new C();

c.F();

C.S(); << here crashes as explained

What I might do wrong, considering I try to extract an instance if there is one or not - when not a nullptr should be returned? I know this might be misleading, so the idea here is that I use generic template functions, even though I don't really use the object instance if any. But, anyway, when I need an instance, I should be able to check if there is something <> nullptr or not.