On Sep 29, 5:32 am, Chris Rebert <c...@rebertia.com> wrote: > On Tue, Sep 28, 2010 at 2:55 AM, Malcolm McLean > > > > <malcolm.mcle...@btinternet.com> wrote: > > On Sep 27, 9:29 pm, p...@informatimago.com (Pascal J. Bourguignon) > > wrote: > >> On the other hand, with the dynamic typing mindset, you might even wrap > >> your values (of whatever numerical type) in a symbolic expression > >> mentionning the unit and perhaps other meta data, so that when the other > >> module receives it, it may notice (dynamically) that two values are not > >> of the same unit, but if compatible, it could (dynamically) convert into > >> the expected unit. Mission saved! > > > I'd like to design a language like this. If you add a quantity in > > inches to a quantity in centimetres you get a quantity in (say) > > metres. If you multiply them together you get an area, if you divide > > them you get a dimeionless scalar. If you divide a quantity in metres > > by a quantity in seconds you get a velocity, if you try to subtract > > them you get an error. > > Sounds just like > Frink:http://futureboy.us/frinkdocs/http://en.wikipedia.org/wiki/Frink
A currently developed language with units is curl: see http://developers.curl.com/userdocs/docs/en/dguide/quantities-basic.html -- http://mail.python.org/mailman/listinfo/python-list
