< 99 Elm Problems < Problem 1
Solution 1: Recursive search for the last element
myLast list =
case list of
[] -> Nothing
[a] -> Just a
b::c -> myLast c
Solution 2: Reverse and take the head
myLast = List.reverse >> List.head
Solution 3: Using List.foldl
myLast = List.foldl (\x _ -> Just x) Nothing
This article is issued from Wikibooks. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.