Extensions to types loaded from a C library

[Jeremy DeHaan]

I was playing with some code in the Derelict project(mainly the 
SFML portion) and was wondering what would happen if I made some 
changes.

Here's an example of what I mean.
In the C code, the struct sfVector2f is defined as such:

typedef struct
{
     float x;
     float y;
} sfVector2f;

The D version of this when loading the .dll into the application 
would be like this:

struct sfVector2f
{
     float x;
     float y;
}

And to my understanding, defining this allows us to use this 
structure in our calls to the C functions in the .dll. But then I 
thought, "could I maybe make some things easier?" and proceeded 
to experiment a bit. Right now I have the structure looking like 
this:

struct sfVector2f
{
     float x;
     float y;
	
	this(float X, float Y)
	{
		x = X;
		y = Y;
	}
}

This compiles just fine, and I can even use the constructor to 
create the object with seemingly no problems. But is this safe to 
do? My gut tells me yes, but I would rather make sure before I 
cause something to explode unknowingly!