On 29 Mar 2000, h.fulton / att.net wrote:
> 
> I'm working on a DBC mechanism in Ruby. Let me crank 
> a little longer and I'll make it public for everyone's 
> comments and changes. And there WILL be changes. :)
> 
Great!

In the meantime, i've been checking out this Sather language.

My first impression is that it has some notable features in 
common with Ruby, including iterators ("yield"), partial 
classes (aka mix-ins), and the syntax, too.

Of course, there are also many differences.
Sather is compiled, strongly typed, separates subtyping
from code inclusion in inheritance... Ruby surely is more
practical.

Anyway, it could be interesting to look at how DBC works in
Sather:

 www.gnu.org/software/sather/Doc/tutorial.html/safety.html

Regards,

-- Mirko Nasato