Overloading compound operators?

[Nyda]

I'm trying to overload several operators for a vector class I'm porting from C++ to C# (nothing serious, just playing around with C# to get some feeling for it).

From the tutorials I read I learned that overloaded operators always have to be static. This is fine for stuff like +, -, *.... but what about += ?

I read that C# will use the + operator here, but this means that the result of, say a+b, has to be stored in a temporary object which is then assigned to the variable on the left side of +=.

The C++ class I'm porting uses a non-static operator and simply adds b to a's private fields (x,y,z) without returning anything. Is there anything similar I could do in C#? Or is this kind of optimization automatically done at compiletime?

[nvoigt]

To avoid C++ style confusion, operator overloading has some limitations in C#. You cannot overload the assignment operator. Likewise, you cannot overload any compund operator like += or -=. If you overload a binary operator, the associated compound operator will be overloaded for you.

[Nyda]

If you overload a binary operator, the associated compound operator will be overloaded for you.

Seems like a big tradeoff to me, but then again, C# is all about safe, stable applications so it probably makes sense. Thanks for the reply.