Data.Foldable.Unicode
(∈) :: (Foldable t, Eq α) => α -> t α -> Bool infix 4 #
(∈) = elem
elem
U+2208, ELEMENT OF
(∋) :: (Foldable t, Eq α) => t α -> α -> Bool infix 4 #
(∋) = flip (∈)
flip
U+220B, CONTAINS AS MEMBER
(∉) :: (Foldable t, Eq α) => α -> t α -> Bool infix 4 #
(∉) = notElem
notElem
U+2209, NOT AN ELEMENT OF
(∌) :: (Foldable t, Eq α) => t α -> α -> Bool infix 4 #
(∌) = flip (∉)
U+220C, DOES NOT CONTAIN AS MEMBER