RFC: Units of measurement for D (Phobos?)

[via Digitalmars-d]

On Tuesday, 12 April 2011 at 16:44:10 UTC, David Nadlinger wrote:
> Recently, I have been playing around with a little units of 
> measurement system in D. As this topic has already been brought 
> up quite a number of times here, I thought I would put my 
> implementation up for discussion here.

I would like to move forward with std.experimental.unit(s).

A question that needs to be decided on Before starting this is:

- David's library and quantities use different interal 
representation. Davids 7-dimensional vector of rational integers 
(a la Boost) is hardcoded to represent SI units. biozic's is not 
and uses a tuple of strings and is therefore more flexible. Which 
direction should we choose?