> I am in favor of something more like that, though I *loathe* adding
> anything further to the preparser. Maybe this is more pythonic:
>
> sage: sin(10 * degrees)
>
> i.e., degrees would be a Python object that represent 1 degree.
> The resulting object 10 * degrees would be a number with units.
>
> I would be interested in a general units package.
Sounds... interesting... but is every trig function now going to have to ask
for the radian value? I'm not as against this as I thought I'd be... but it
looks like there are some wierd issues:
* It would be cool to integrate some surface of revoluion to determine the
volume of a bottle, or some other surface of revolution. Does GSL have to know
units, or should we somehow strip them out first? Then, will we have to know
that a triple integral returns a cubic unit?
* Are we going to throw exceptions when units of differing type are added?
1*meters + 2*meters*meters : NOT OK.
1*meters + 2*feet = ... in feet or meters? (I say meters)
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