Cartesian product of infinite ranges, round 2

[Andrei Alexandrescu]

On 10/15/12 8:46 PM, H. S. Teoh wrote:
> Thanks to an idea by Andrei, I now have an implementation of the
> Cartesian product of two infinite ranges that requires only forward
> ranges.
>
> However, I'm running into an array-out-of-bounds problem with
> std.algorithm.joiner, and I don't know how to reduce the code to track
> down the problem. Here's the code:
[snip]

I'm traveling with little time to spare, but one visible thing is that 
the limit of the iteration (25) spills into the result. May be easiest 
to track things starting from that observation.

Andrei