Haskell Language Infix operators Custom operators
Example
In Haskell, you can define any infix operator you like. For example, I could define the list-enveloping operator as
(>+<) :: [a] -> [a] -> [a]
env >+< l = env ++ l ++ env
GHCi> "**">+<"emphasis"
"**emphasis**"
You should always give such operators a fixity declaration, like
infixr 5 >+<
(which would mean >+< binds as tightly as ++ and : do).
