Re: Reuseable Scientific Types Package

[Brian Rogoff <bpr@shell5.ba.best.com>]

On Wed, 12 Jul 2000, David Kristola wrote:
> On Mon, 10 Jul 2000 13:51:06 -0700, Howard W. LUDWIG wrote
> (in message <396A373A.1B80329F@lmco.com>):
> 
> > David Kristola wrote:
> >> A third option...
> >> 
> >> I too needed types with units.  With a little bit of work, i created a
> >> program to auto-generate a types package with appropriate operators for
> >> all of the types needed (an extensive list, which caused the number of
> >> operators to explode).
> 
> {snip}
> ... snip again ...
> 
> I think the idea of having a code generator might be reusable.
> A user could enter in the set of types she is interested in
> and produce a types package with just those types.  Any
> individual project is likely to be limited in the units that
> are important.

Actually, the idea of a code generator is extremely useful, but I thought 
macros were considered a non-no in the Ada community. A powerful macro 
system would allow you to do a lot more than just handle systems of
units. You might want to examine some other macro and preprocessing
systems, like those of Common Lisp, Scheme, Dylan, M5, and CamlP4. 

-- Brian