Idiomatic way to process const/immutable arrays as ranges

[Dicebot]

On Monday, 11 February 2013 at 16:54:04 UTC, Jonathan M Davis 
wrote:
> The const(T)[] cannot alter the original array at all, so I 
> concur with Steven
> in that the complaints about not wanting to use tail-const make 
> no sense.
> Maybe this article will help clear things up:

And I exactly want to prohibit altering original array. What I 
want is to copy slice (without deep copying of data) and alter 
this fresh copy. I can't see how it contradicts immutability 
guarantees or D array design.