What is Expressiveness in a Computer Language

[Matthias Blume]

Darren New <dnew at san.rr.com> writes:

> [ ... ] As far as I know, LOTOS is the only
> language that *actually* uses abstract data types - you have to use
> the equivalent of #include to bring in the integers, for
> example. Everything else uses informal rules to say how types work.

There are *tons* of languages that "actually" facilitate abstract data
types, and some of these languages are actually used by real people.