Re: Exchanging objects between programs with different inheritance hierarchies

[Simon Wright <simon.j.wright@amsjv.com>]

Jim Rogers <jimmaureenrogers@worldnet.att.net> writes:

> Steven Deller wrote:

> > I believe streams and 'Class'Output and 'Class'Input may be the answer,
> > but find myself unable to fully understand the RM's "contract" with
> > regard to writing, and then reading, tagged type objects.
> 
> You will need to provide a common package on both systems.  That
> package should define the tagged types and also a customization of
> the 'Class'Input and 'Class'Output operations.

You almost never have to override 'Input, 'Output. 'Read and 'Write,
perhaps (eg for access types).