Re: Macks - adding unit constants?

[Stephen Leake <Stephe.Leake@nasa.gov>]

Jacob Sparre Andersen <sparre@crs4.it> writes:

> Stephen Leake wrote:
> 
> > Exception for user interfaces, you should only use one length unit in
> > your code;
> 
> When it comes to my current problem I agree, but I am not sure I do it
> in general.
> 
>  > it might as well be meter (m).
> 
> It is very impractical to have to remember to write "0.000_86" and not
> "0.86", when you put constants in your code.  

That's a user interface.

> I prefer to have to write "0.000_86 * m" (or "0.86 * mm") so there
> is an explicit conversion from nondimensional to dimensional units.
> Since this preference is rather strong, I have decided to use a
> hand-written units package for this project.

How often do you actually have hardcoded constants in real code? I'd
expect them to be in an input file somewhere.

-- 
-- Stephe