[Yact-dev] Null object

[Marius S. <ma...@fi...>]

I think we should add a YNullable interface (or similar):

class YNullable
{
	bool isNullObject() = 0;
}

Let's get rid of as many "if pointer is not null" statements as 
possible.  I think this will make Yact a lot more stable (the risk of 
coredumping is greatly reduced) and code-flow in general will be much 
cleaner, prettier, and easier to read.  No more of those annoying null 
pointer if's, and just go ahead and access the object directly.  If null 
pointer have some meaning that makes them different from an object, then 
use isNullObject(), where null classes return true, and other classes 
return false.

You can already get Yact to crash by playing around with adding new classes 
and adding inheritance and deleting them etc.  I don't know where the bug 
is exactly, but I bet it's a null pointer.

  - Marius