Mark Carroll
Mon, 20 Aug 2001 16:19:41 -0400 (EDT)

Does anyone know of any Haskell texts that introduce 'deriving' fairly
comprehensively? All I've been able to find out from what I have is that
your type can derive Eq, Ord, Show etc. and then they'll magically work as
if you'd written the instance declarations yourself. I've no idea how you
can make your own type classes that types can 'derive' from, etc. IYSWIM,
or really what's going on at all.

-- Mark