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Haskell: What is the role of Haskell's kind system? O Kinds classify values (e.g., 5 has kind Int) O Kinds constrain polymorphism (e.g., max works with any type of kind Ord) O Kinds classify type constructors (e.g., Maybe has kind Type -> Type) O Kinds classify data constructors (e.g., Just has kind Maybe) O All of the above O None of the above O I don't know

Haskell: What is the role of Haskell's kind system? O Kinds classify values (e.g., 5 has kind Int) O Kinds constrain polymorphism (e.g., max works with any type of kind Ord) O Kinds classify type constructors (e.g., Maybe has kind Type -> Type) O Kinds classify data constructors (e.g., Just has kind Maybe) O All of the above O None of the above O I don't know

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Haskell: What is the role of Haskell's kind system? O Kinds classify values (e.g., 5 has kind Int) Kinds constrain polymorphism (e.g., max works with any type of kind Ord) Kinds classify type constructors (e.g., Maybe has kind Type -> Type) Kinds classify data constructors (e.g., Just has kind Maybe) All of the above O None of the above O I don't know
Transcribed Image Text:Haskell: What is the role of Haskell's kind system? O Kinds classify values (e.g., 5 has kind Int) Kinds constrain polymorphism (e.g., max works with any type of kind Ord) Kinds classify type constructors (e.g., Maybe has kind Type -> Type) Kinds classify data constructors (e.g., Just has kind Maybe) All of the above O None of the above O I don't know
Haskell: Recall the function (++), as defined in the Prelude [ ] (х:xs) ++ ys 3D х : ++ ys ys (xs ++ ys) If we have four large lists we wish to concatenate, which of the expressions below is the most efficient? a ++ (b ++ (c ++ d)) O (a ++ b) ++ (c ++ d) a ++ (b ++ c) ++ d O ((a ++ b) ++ c) ++ d O All of the above O None of the above O I don't know
Transcribed Image Text:Haskell: Recall the function (++), as defined in the Prelude [ ] (х:xs) ++ ys 3D х : ++ ys ys (xs ++ ys) If we have four large lists we wish to concatenate, which of the expressions below is the most efficient? a ++ (b ++ (c ++ d)) O (a ++ b) ++ (c ++ d) a ++ (b ++ c) ++ d O ((a ++ b) ++ c) ++ d O All of the above O None of the above O I don't know
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