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Fri Nov 23 23:37:47 EST 2012

Wrappers: The point

- classes

Generic functions are a better abstraction mechanism, but are hard to
integrate into a wide set of languages.  Find out how exactly this is
true/false, and if true, how to standardize on classes
(single-dispatch + factory).

- abstract vs. concrete (memory-only) state

distinguish between concrete, memory-only objects, and references to
external state (e.g. file descriptors).  this is actually a very
important distinction when thinking about lifetime of objects and of
serialization.  how to make it proper?

( i wrote something about re-initializable state before: state that's
essentially just cache vs. state that is essential to the object's
identity. )



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