How to dynamically calculate an index?

[anonymouse]

On Tuesday, 12 July 2022 at 14:17:36 UTC, ananymouse wrote:
>
> Been racking my brain on this for hours. Please point me in the 
> right direction.
>
> Thanks,
> --anonymouse

My current implementation:

     ``` d
     // Allow for indexing to read a value, e.g a[0,0,0]
     T opIndex(A...)(A a) {
         static if(a.length == 3) {
             int index = a[0] * dims[1] * dims[2] + a[2];
             return data[index];
         }
         else static if(a.length == 2) {
            return data[a[0] * dims[1] + a[1];
         }
         else static if (a.length == 1) {
            return data[0]
         }
         assert(0);
     }
     ```

This does not scale well. Therefore, I'd like to change the first 
if statement to work with any array.length > 2 and dynamically 
generate the code. I've tried using a foreach loop to achieve 
this but failed miserably.

--anonymouse