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In a similar manner, show how the following type of binary trees with data in their nodes can be made into a foldable and traversable type: data Tree a = Leaf | Node (Tree a) a (Tree a) deriving Show

   In a similar manner, show how the following type of binary trees with data in their nodes can be made into a foldable and traversable type:
data Tree a = Leaf | Node (Tree a) a (Tree a)
deriving Show

Programming in Haskell

Programming in Haskell

Graham Hutton 2nd Edition

Chapter 14, Problem 4

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Step 1

The Foldable typeclass provides a generic way to fold (or reduce) a data structure to a single value. To define the Foldable instance for Tree, we need to implement the foldr function. This function takes a binary function and an initial accumulator value, and Show more…

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In a similar manner, show how the following type of binary trees with data in their nodes can be made into a foldable and traversable type: data Tree a = Leaf | Node (Tree a) a (Tree a) deriving Show

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