Associative Ranges

[Freddy via Digitalmars-d]

On Friday, 1 August 2014 at 23:57:37 UTC, Freddy wrote:
> I just curious, do Associative Ranges exist. If so where can i
> find them. I started thinking about them when i asked this
> question:
> http://forum.dlang.org/thread/vauuognmhvtjrktazyeb@forum.dlang.org
I started a phobos fork for this, what do you think so far
https://github.com/Superstar64/phobos/blob/60d3472b1056b298319976f105aa3b9b3f165e97/std/range.d#L1357-1420