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- From: "David " <David@Byrden.com>
- To: "xml" <xml-dev@ic.ac.uk>
- Date: Wed, 23 Jun 1999 15:04:36 +0100
> From: Paul Prescod <paul@prescod.net>
> What I hear you saying is that the situation at the OMG is identical to
> that in Java, Python, the ODMG and most other object-based environments.
> There is a very basic notion of equivalence that you can depend upon when
> you are enumerating objects at a low level. Object types can invent
higher
> level concepts of identity and equivalence if they want to.
To clarify for anyone who is puzzled:
The most basic equivalence = these two references
indicate the same physical bytes in memory. Equaller
than that you cannot get.
Higer level equivalence = generally means that these
two objects could be swapped without any side effects
that are visible through the external interface they present
to the world.
David Byrden
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