opIndex negative index?

[IGotD-]

On Thursday, 21 January 2021 at 15:49:02 UTC, IGotD- wrote:
> On Thursday, 21 January 2021 at 14:47:38 UTC, cerjones wrote:
>>
>> ohreally?
>
> I thought you were talking about the built in arrays.

Since you create your own implementation just as you showed you 
are basically free to do anything. That also includes that you 
are free to create your own iterator as well.