Unordered Element Pairs of a Range

["Nordlöw" via Digitalmars-d-learn]

On Monday, 7 September 2015 at 09:12:53 UTC, cym13 wrote:
> There is an open bug for that 
> https://issues.dlang.org/show_bug.cgi?id=6788

Thanks.

So I construct a pairwise range with two implementation cases one 
for RandomAccessRange and one for InputRange

https://github.com/nordlow/justd/blob/master/combinations.d#L172

Should this go into Phobos?