PhysicswithHaskell/05-Lists/exercises/ex5.2.hs

-- Exercise 5.2
-- George C. Privon
-- 2024-07-20

sndItem0 :: [a] -> a
sndItem0 ys = if length ys == 0
              then error "Empty list has no second element."
              else if length ys == 1
                    then error "1-item list has no 2nd item."
                    else ys !! 1