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2 points by pg 6118 days ago | link | parent

no need for bst-trav since there is an elements function. You can just map over the elements

Mapping over elements is not the same if you're looking for the 4th element of a huge tree; which is probably what you have if you're using a bst.



7 points by raymyers 6118 days ago | link

Actually yes, in Haskell it is the same. Lazy evaluation means you could take the 4th element of a map over an infinite list. For example: "map (*2) [1..] !! 4"

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