Why are static arrays not ranges?

[Jesse Phillips via Digitalmars-d-learn]

On Monday, 21 September 2015 at 20:33:10 UTC, Jack Stouffer wrote:
> import std.range;
>
> void main() {
>     int[6] a = [1, 2, 3, 4, 5, 6];
>
>     pragma(msg, isInputRange!(typeof(a)));
>     pragma(msg, isForwardRange!(typeof(a)));
>     pragma(msg, isRandomAccessRange!(typeof(a)));
> }
>
> $ dmd -run test.d
> false
> false
> false
>
> That's ridiculous. Do I have to wrap my static arrays in 
> structs to get range primitives?
>
> Is there an actual reason for this?

A static array has a constant length, so it is not possible to 
popFront on a static array.

Making a dynamic array from it is easy, just slice it with []:

      pragma(msg, isInputRange!(typeof(a[])));
      pragma(msg, isForwardRange!(typeof(a[])));
      pragma(msg, isRandomAccessRange!(typeof(a[])));