On Wed, Aug 17, 2011 at 10:32 AM, Shriram Krishnamurthi <[email protected]> wrote: >> Jon Postel summed up contravariance by thinking about HTML: "Be >> liberal in what you accept, and conservative in what you send." > > That's cute, except that Postel's law is arguably a source of security > holes, so it's probably not the best analogy. (-: > > Shriram >
That's my segue to dire warnings about reflection. This is wildly off-topic for the list, so I shunted the responses to Norman looking for contravariance of functions in category theory and Shriram blaming my analogies for poor security to a lunch-break page. <http://www.arcadianvisions.com/downloads/ContravariantFunctors.html> Anthony _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
