Editing Infix operator (section)

== Using prefix functions with infix notation ==

Putting <code>`</code>-marks around a prefix function allows us to use it like an infix function:

  Prelude> let concatPrint x y = putStrLn $ (++) x y
  Prelude> concatPrint "a" "b"
  ab
  Prelude> "a" `concatPrint` "b"
  ab

Note that you can only normally do this with a function that takes two arguments. Actually, for a function taking more than two arguments, you can do it but it's not nearly as nice (note the need for extra parentheses):

 Prelude> foldl (+) 0 [1..5]
 15
 Prelude> ((+) `foldl` 0) [1..5]
 15