Static Length Propagation of Ranges

[Nordlöw via Digitalmars-d-learn]

On Wednesday, 19 October 2016 at 19:01:50 UTC, Meta wrote:
> https://goo.gl/t9m3YK
>
> I'm actually pretty impressed that this kind of code can be 
> written in D.

Thanks! Add at

https://github.com/nordlow/phobos-next/blob/master/src/algorithm_ex.d#L2234