Compile-time variables

[Kayomn]

I'll give a better example of what it is I'm trying to do.

These are node types. Their contents are not important in this 
explanation, only that they operate as a tree structure.

class Node;

class RootNode : Node;

class SpriteNode : Node;

The result of getNodeID on a specific type is always the same. A 
value representing it that is applied during compilation. The 
value does not matter to the programmer, only that it is unique 
and gets applied.

----------------------------------------------------------------------
uint nodeId1 = getNodeID!(Node)(); // 0.

uint nodeId2 = getNodeID!(SpriteNode)(); // 1.

uint comparison = getNodeID!(Node)(); // 0.

// True.
if (getNodeID!(Node)() == getNodeID!(Node)()) {

}

// False.
if (getNodeID!(SpriteNode)() == getNodeID!(Node)()) {

}
----------------------------------------------------------------------