std.range should support recursion (Was: One-line FFT, nice!)

[Andrei Alexandrescu]

On 9/25/12 4:22 AM, Mehrdad wrote:
> If std.range supported recursion (i.e. by providing a different
> implementation for ranges that can be implemented without creating new
> times, i.e. Stride of Stride == Stride), then it would make the library
> a lot more usable and less bloated.

I'm not sure I understand this, and it seems I should. Could you please 
explain (perhaps with a simpler example than FFT)?

Thanks,

Andrei