That would not be economical. Lets just say people never use more than 8-tuple and then try to count how many functions you would need.
The "tuple" package on Haskell provides a generic interface to access/manipulate the k'th element of an n-tuple. That should be sufficient and is not subject to combinatorical explosion (well the instance are a bit). Gruss, Christian * Serge D. Mechveliani <mech...@botik.ru> [04.01.2011 11:29]: > People, > I define, for example, > tuple42 (_, y, _, _) = y, > setTuple42 (x, _, z, u) y = (x, y, z, u), > mapTuple42 f (x, y, z, u) = (x, f y, z, u). > > But it looks natural to have such functions for tuples in the library. > As Haskell-2010 has zip3, zip4 ..., where are the library functions > tupleij, setTupleij, mapTupleij, say, for i, j <- [2 .. 6] > ? > I expected to find in the Report "Data.Tuple" similar as "Data.List", > but do not. > GHC has "Data.Tuple", but it misses the above functions. > > Thank you in advance for your comments, > > ----------------- > Serge Mechveliani > mech...@botik.ru > > > > > > > _______________________________________________ > Glasgow-haskell-users mailing list > Glasgow-haskell-users@haskell.org > http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
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