🚀 go-pugleaf

In <objtch.670045723@extro> objtch@extro.ucc.su.oz.au (Peter Goodall)
writes about a collection of Objects in Smalltalk.  But a collection
of Objects is not a heterogeneous collection.  This may be a little
confusing because Object is a universal supertype in Smalltalk.

Let's be concrete:

A heterogeneous collection is one for which no single type can be
safely assigned to all members of the collection.

If all of the members of the collection have some common supertype,
AND no operation is performed on any member of the collection that is
not valid for that common supertype, then the collection is a
homogeneous collection of members of that supertype.

So if you have a collection of objects, you have to do something to
those objects that you can't safely do to Objects in order to have a
heterogeneous collection.

joe