:: Ord a => [a] -> [a] is:exact -package:base-prelude -package:extra -package:ghc package:safe

tailErr :: Partial => [a] -> [a]
safe Safe
Identical to tail, namely that fails on an empty list. Useful to avoid the x-partial warning introduced in GHC 9.8. 
tailErr [] = error "Prelude.tail: empty list"
tailErr [1,2,3] = [2,3]
tailSafe :: [a] -> [a]
safe Safe
tailSafe [] = []
tailSafe [1,3,4] = [3,4]
initSafe :: [a] -> [a]
safe Safe