[Haskell-cafe] where to put handy functions?
andrewcoppin at btinternet.com
Fri Aug 10 16:00:05 EDT 2007
Chad Scherrer wrote:
> I wonder, is listify a contravariant functor?
I wonder - will I ever reach the stage where I too make off-hand remarks
like this? :-}
Now I know how all the "normal" people feel when I tell them that a
relation is simply a subset of the extended Cartesian product of the
respective domains of its attributes...
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