Homework answers / question archive / shortfall :: [Order] -> [Delivery] -> [(Product, Double)]   How do I return a list of products for which the total quantity ordered exceeds the total quantity delivered, with the difference in quantity by completing the function above in haskell?

shortfall :: [Order] -> [Delivery] -> [(Product, Double)]   How do I return a list of products for which the total quantity ordered exceeds the total quantity delivered, with the difference in quantity by completing the function above in haskell?

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shortfall :: [Order] -> [Delivery] -> [(Product, Double)]

How do I return a list of products for which the total quantity ordered exceeds the total quantity delivered, with the difference in quantity by completing the function above in haskell?