[m-dev.] for review: change library to use existential types

[Tyson Dowd]

On 05-Aug-1998, Fergus Henderson <fjh at cs.mu.OZ.AU> wrote:
> Hi,
> 
> Tyson, can you please review this one?
> 
> I will need to wait until Tyson's bug fix for
> existential types in `.int' files has been installed
> on all our machines before committing this one.
> 

Isn't bootstrapping a nightmare.

> --------------------
> 
> Change the standard library to use existential types.
> 
> library/std_util.m:
> 	Add univ_value/1.
> 
> library/term.m:
> library/io.m:
> 	Use existential types rather than unsafe casts and other hacks.
> 

This change seems fine.

-- 
       Tyson Dowd           # "Bill Gates is a white persian cat and a monocle
                            # away from becoming another James Bond villan."
     trd at cs.mu.oz.au        # "No Mr Bond, I expect you to upgrade."
http://www.cs.mu.oz.au/~trd #                -- Dennis Miller and Terri Branch