How does D improve design practices over C++?

[Walter Bright]

Christopher Wright wrote:
> Of course, C++ is Turing complete, so there's no feature in D that you 
> can't replicate in C++. In the worst case, you can alter DMD (which is 
> written in C++) to compile and run your D program.

The same goes for C. I've seen professional code that did OOP in C using 
manually generated function pointer tables.