Re: enumration using integers?

[Keith Thompson <kst@cts.com>]

Sven Nilsson <emwsvni@emw.ericsson.se> writes:
> Ted Dennison wrote:
> > Hmm. I don't see anything in the above that couldn't have been done
> > by making Distance a sybtype of Integer. Are you saying that you
> > just want an integer type
> > with "holes" in it, so that
> > Dist := 2;
> > would raise a Constraint_Error?
> 
> Yepp, that sounds about right. I've been looking for something like that
> in Barnes but I couldn't find it... Any clue?
> 
> -Sven

Declare your own private type with the desired characteristics.  You
can overload whatever arithmetic operations you need.  You don't get
numeric literals, but you can overload unary "+" to convert from
Integer.

(The language doesn't have *everything* built in.)

-- 
Keith Thompson (The_Other_Keith) kst@cts.com  <http://www.ghoti.net/~kst>
San Diego Supercomputer Center           <*>  <http://www.sdsc.edu/~kst>
Cxiuj via bazo apartenas ni.