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From: Robert Dewar <robert_dewar@my-deja.com>
Subject: Re: garbage collection
Date: 1999/08/21
Message-ID: <7pmad9$jnq$1@nnrp1.deja.com>#1/1
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Date: 1999-08-21T00:00:00+00:00
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In article <yecvha9izs6.fsf@king.cts.com>,
> "Matthew Heaney" <matthew_heaney@acm.org> writes:
> [...]
> > It would be swell if the language were amended to make
access types limited;
> > this would prevent any problems engendered by accidental
copying of access
> > objects.

There has *got* to be a smiley missing here. It is inconceivable
to make this change to the language (all access types limited)
and would be HIGHLY undesirable.

Presumably, if the above is not a joke (which it might be,
I am not sure), it is a proposal for some kind of extension
involving limited access types.

Actually I think the reasonable thing to do is to extend the
storage pool abstraction so that a version of it contains
a copy operation that is called for all implicit copies of
the given access value. You probably want to introduce some
general controlled notion here.


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