Module { } stdlib/bhc-base/hs/BHC/Data/Tuple.hs Tuple Functions fst3 :: (a, b, c) -> a { } # snd3 :: (a, b, c) -> b { } # O(1). Extract the second element of a 3-tuple. thd3 :: (a, b, c) -> c { } # O(1). Extract the third element of a 3-tuple.