Have you looked at D yet? It scores 4/5 by your mark, and they're working on the fifth point. Here's the documentation for the proposed units module. I believe

Have you looked at D yet? It scores 4/5 by your mark, and they're working on the fifth point. Here's the documentation for the proposed units module. I believe it has the same principles as Boost units: http://klickverbot.at/code/units/std_units.html http://klickverbot.at/code/units/std_units.html