I'm looking at storing a data type with 7 fields in an unboxed vector,
which means that I'll have to use GenUnboxTuple to create an instance
for Unbox (a,b,c,d,e,f,g), but I was thinking that another solution is
to use "instance (Unbox a, Unbox b) => Unbox (a,b)" recursively to
create "instance Unbox (a,(b,(c,(d,(e,(f,g))))))". Is there any reason I
shouldn't say something like,
import qualified Data.Vector.Unboxed as Vector
data X = X Int Int Int Int Int Int Int
toTuple (X a b c d e f g) = (a,(b,(c,(d,(e,(f,g))))))
toVector = Vector.fromList . map toTuple
I guess I'm wondering if there is a technical reason why I should use an
explicit Unbox instance for 7-tuples, or if it's just a convenience to
have Unbox defined for tuples > 2?
Thanks,
Jeff
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