:: Eq a => [a] -> a -> Bool is:exact -package:basic-prelude -package:xmonad-contrib -package:mixed-types-num -package:ghc package:vector

elem :: (Vector v a, Eq a) => a -> v a -> Bool
vector Data.Vector.Generic
O(n) Check if the vector contains an element.
notElem :: (Vector v a, Eq a) => a -> v a -> Bool
vector Data.Vector.Generic
O(n) Check if the vector does not contain an element (inverse of elem).