On Sun, 09 Oct 2011 10:34:46 -0400, Leon Timmermans <faw...@gmail.com>
wrote:
I think the obvious mistake you're making is using inheritance in the
first place. Why are you doing that? Your interface is not «an IP
address is really a number», so why would you make it one?
Ah, but an IP address *is* really a number. An unsigned 128-bit integer,
in fact, with some additional properties that are specific to the
semantics of IP addresses themselves.
True, certain operations (multiplication and division spring to mind) are
-- probably -- bad ideas, but addition, subtraction, bitwise operations,
bitshifting, comparison (including range comparison and sorting), and many
other good numbery things definitely apply.
--
Paul Bennett (PWBENNETT)
