[Python-Dev] PEP 246, redux
mcherm at mcherm.com
Tue Jan 11 18:27:26 CET 2005
I think you must inhabit a far more perfect world than I do.
You say, for instance, that:
> ...-1 if this introduces a performance penalty [...] just to
> support people who want to create deliberate Liskov violations.
> I personally don't think that we should pander to Liskov
... but in my world, people violate Liskov all the time, even
in languages that attempt (unsuccessfully) to enforce it. 
You say that:
> I think one should adapt primarily to interfaces, and
> interface-to-interface adaptation should be reserved for
> non-lossy, non-noisy adapters.
... but in my world, half the time I'm using adaptation to
correct for the fact that someone else's poorly-written
code requests some class where it should have just used
You seem to inhabit a world in which transitivity of adaptation
can be enforced. But in my world, people occasionally misuse
adaptation because they think they know what they're doing
or because they're in a big hurry and it's the most convenient
tool at hand.
I wish I lived in your world, but I don't.
-- Michael Chermside
 - Except for Eiffel. Eiffel seems to do a pretty good job
of enforcing it.
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