memcpy in D

[Tyro[17]]

I'd just like to say thanks for your suggestions and quite complete 
solutions. I particularly liked the alternate implementation presented 
by Marco. I must admit that I did not understand what was happening at 
first.

So just to confirm my understanding: Because the address at memory is 
casted to ushort* in defining base, every iteration of the foreach loop 
advances the pointer two bytes into the array?

Thanks,
Andrew