Partial class implementation

[janderson]

I want to extend what I was saying about components.

If you have a class and you want to break it up into several files based 
on methods, why not use components instead.  You end up with a much more 
flexible design.

ie Say I have:

class Boat
{
public:
	string GetName();
	string GetOwner();
//ect...

	point GetLocation();
	point Facing();
	float GetSpeed();
//ect...
};

If you went for component design you would probably do something like:

class Info
{
public:
	string GetName();
	string GetOwner();
//ect...
};

class PhysicsObj
{
public:
	point GetLocation();
	point Facing();
	float GetSpeed();
//ect...
};

struct Boat
{
	Info info = new Info();
	PhysicsObj physicsObj = new PhysicsObj();
};


Immediately more reusable and maintainable.

Now like you said, you could use mixins.  This is a nicety of D however 
components offer a few advantages as well like a nice way to break up 
the namespaces, are easier to refactor and allow for more cohesive code.

-Joel