Why can't static arrays be sorted?

[TheGag96 via Digitalmars-d-learn]

On Saturday, 8 October 2016 at 21:14:43 UTC, Jon Degenhardt wrote:
> This distinction is a bit on the nuanced side. Is it behaving 
> as it should?
>
> --Jon

I think so? It's not being modified in the second case because 
the array is being passed by value... "x" there is a reference to 
an element of the copy created to be passed to each(). I assume 
there's a good reason why ranges in general are passed by value 
into these functions -- except in this one case, the stuff inside 
range types copied when passed by value won't be whole arrays, 
I'm guessing.