They are just syntactic sugar. You can just as easily create your own
tuple types:
data Tuple2 a b = Tuple2 a b
data Tuple3 a b c = Tuple3 a b c
data Tuple4 a b c d = Tuple4 a b c d
..etc
...except it's pretty ugly and none of the built-in Prelude functions
that use tuples will work with them (curry, uncurry, fst, snd, lookup,
zip,..).
Peter
On 28 August 2012 02:47, Carlos J. G. Duarte
Sorry if this question is too insane, but I was wondering if tuples are really needed in Haskell. I mean, could tuples be generally replaced by variables unroll (f x y z) and explicit data types, or are there some things only possible to do via tuples?
Thx in advance (and sorry if this looks silly).
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