expression templates vs D arrays

[so]

On Thu, 08 Dec 2011 14:16:46 +0200, Timon Gehr <timon.gehr at gmx.ch> wrote:

> Expression templates in D are syntactically more limited because it is  
> impossible to overload the 'not' and comparison operators. Why is there  
> no point to them?

I also want to know why.
Another thing is that ET problem has no solution in C++.
Aliasing, which i think with in D it might be possible.