Haskell unicode symbols

gistfile1.hs

    ( (∈), (∋), (∉), (∌)
    , (∅)
    , (∪), (∖), (∆), (∩)

{-|
(∈) = 'member'

U+2208, ELEMENT OF
-}
(∈) ∷ Int → IntMap α → Bool
(∈) = member
{-# INLINE (∈) #-}

{-|
(∋) = 'flip' (∈)

U+220B, CONTAINS AS MEMBER
-}
(∋) ∷ IntMap α → Int → Bool
(∋) = flip (∈)
{-# INLINE (∋) #-}

{-|
(∉) = 'notMember'

U+2209, NOT AN ELEMENT OF
-}
(∉) ∷ Int → IntMap α → Bool
(∉) = notMember
{-# INLINE (∉) #-}

{-|
(∌) = 'flip' (∉)

U+220C, DOES NOT CONTAIN AS MEMBER
-}
(∌) ∷ IntMap α → Int → Bool
(∌) = flip (∉)
{-# INLINE (∌) #-}

{-|
(∅) = 'empty'

U+2205, EMPTY SET
-}
(∅) ∷ IntMap α
(∅) = empty
{-# INLINE (∅) #-}

{-|
(∪) = 'union'

U+222A, UNION
-}
(∪) ∷ IntMap α → IntMap α → IntMap α
(∪) = union
{-# INLINE (∪) #-}

{-|
(∖) = 'difference'

U+2216, SET MINUS
-}
(∖) ∷ IntMap α → IntMap β → IntMap α
(∖) = difference
{-# INLINE (∖) #-}

{-|
Symmetric difference

a ∆ b = (a ∖ b) ∪ (b ∖ a)

U+2206, INCREMENT
-}
(∆) ∷ IntMap α → IntMap α → IntMap α
a ∆ b = (a ∖ b) ∪ (b ∖ a)
{-# INLINE (∆) #-}

{-|
(∩) = 'intersection'

U+2229, INTERSECTION
-}
(∩) ∷ IntMap α → IntMap β → IntMap α
(∩) = intersection
{-# INLINE (∩) #-}


U+2208, ELEMENT OF
-}
(∈) ∷ Int → IntSet → Bool
(∈) = member
{-# INLINE (∈) #-}

{-|
(∋) = 'flip' (∈)

U+220B, CONTAINS AS MEMBER
-}
(∋) ∷ IntSet → Int → Bool
(∋) = flip (∈)
{-# INLINE (∋) #-}

{-|
(∉) = 'notMember'

U+2209, NOT AN ELEMENT OF
-}
(∉) ∷ Int → IntSet → Bool
(∉) = notMember
{-# INLINE (∉) #-}

{-|
(∌) = 'flip' (∉)

U+220C, DOES NOT CONTAIN AS MEMBER
-}
(∌) ∷ IntSet → Int → Bool
(∌) = flip (∉)
{-# INLINE (∌) #-}

{-|
(∅) = 'empty'

U+2205, EMPTY SET
-}
(∅) ∷ IntSet
(∅) = empty
{-# INLINE (∅) #-}

{-|
(∪) = 'union'

U+222A, UNION
-}
(∪) ∷ IntSet → IntSet → IntSet
(∪) = union
{-# INLINE (∪) #-}

{-|
(∖) = 'difference'

U+2216, SET MINUS
-}
(∖) ∷ IntSet → IntSet → IntSet
(∖) = difference
{-# INLINE (∖) #-}

{-|
Symmetric difference

a ∆ b = (a ∖ b) ∪ (b ∖ a)

U+2206, INCREMENT
-}
(∆) ∷ IntSet → IntSet → IntSet
a ∆ b = (a ∖ b) ∪ (b ∖ a)
{-# INLINE (∆) #-}

{-|
(∩) = 'intersection'

U+2229, INTERSECTION
-}
(∩) ∷ IntSet → IntSet → IntSet
(∩) = intersection
{-# INLINE (∩) #-}

{-|
(⊆) = 'isSubsetOf'

U+2286, SUBSET OF OR EQUAL TO
-}
(⊆) ∷ IntSet → IntSet → Bool
(⊆) = isSubsetOf
{-# INLINE (⊆) #-}

{-|
(⊇) = 'flip' (⊆)

U+2287, SUPERSET OF OR EQUAL TO
-}
(⊇) ∷ IntSet → IntSet → Bool
(⊇) = flip (⊆)
{-# INLINE (⊇) #-}

{-|
a ⊈ b = (a ≢ b) ∧ (a ⊄ b)

U+2288, NEITHER A SUBSET OF NOR EQUAL TO
-}
(⊈) ∷ IntSet → IntSet → Bool
a ⊈ b = (a ≢ b) ∧ (a ⊄ b)
{-# INLINE (⊈) #-}

{-|
a ⊉ b = (a ≢ b) ∧ (a ⊅ b)

U+2289, NEITHER A SUPERSET OF NOR EQUAL TO
-}
(⊉) ∷ IntSet → IntSet → Bool
a ⊉ b = (a ≢ b) ∧ (a ⊅ b)
{-# INLINE (⊉) #-}

{-|
(⊂) = 'isProperSubsetOf'

U+2282, SUBSET OF
-}
(⊂) ∷ IntSet → IntSet → Bool
(⊂) = isProperSubsetOf
{-# INLINE (⊂) #-}

{-|
(⊃) = 'flip' (⊂)

U+2283, SUPERSET OF
-}
(⊃) ∷ IntSet → IntSet → Bool
(⊃) = flip (⊂)
{-# INLINE (⊃) #-}

{-|
a ⊄ b = 'not' (a ⊂ b)

U+2284, NOT A SUBSET OF
-}
(⊄) ∷ IntSet → IntSet → Bool
a ⊄ b = not (a ⊂ b)
{-# INLINE (⊄) #-}

{-|
a ⊅ b = 'not' (a ⊃ b)

U+2285, NOT A SUPERSET OF
-}
(⊅) ∷ IntSet → IntSet → Bool
a ⊅ b = not (a ⊃ b)
{-# INLINE (⊅) #-}