How do I create an operator in Haskell?

Question

Making a ternary logic table, and I would like to make my own function for an operator that I\'ll call <=>.

So, for example, I want to do this, but

Answer 1

Function names with symbols have different syntax than those without:

-- Works:
(<^>) :: Int -> Int -> Int
a <^> b = a + b

-- Doesn't work:
{-
<^> :: Int -> Int -> Int
<^> a b = a + b
-}

-- Works:
letters :: Int -> Int -> Int
letters a b = a + b

-- Doesn't work:
{-
(letters) :: Int -> Int -> Int
a letters b = a + b
-}

I promise, though - Haskell is well worth learning the complex rules.