Pattern matching makes tuples really useful. Sometimes you just want to return a pair of values and you don't feel like making a one off constructor for it. Eg: random :: (RandomGen g, Random a) => g -> (a, g). Without tuples you'd have to have a one off type data RandomGenWithRandom g a = RGWR g a, which is overkill, when you just wanted two values. On Mon, Aug 27, 2012 at 9:47 PM, Carlos J. G. Duarte < carlos.j.g.duarte@gmail.com> wrote:
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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