But if you dislike tuples you can use nested pairs, like
infixr 0 :.
data T a b = a :. b
Now you can write
'a' :. True :. "Hello" :. ()
which has type
T Char (T Bool (T String ()))
But I guess that's not what you were after?
-- Lennart
Fergus replied:
[...] if you dislike
PS. I've got a length function for ``heterogeneous lists'', as
they appear in nested pairs, in Hugs. However, it uses the
type system extensions available in 1.3c or in 1.4 [98 BETA].
How much can you do in plain Haskell??? in Cayenne?-)
oops.
On second thought, this length
