Arc Forum | In haskell you can designate any sequence of characters as an infix operator. He...

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2 points by akkartik 5122 days ago | link | parent

In haskell you can designate any sequence of characters as an infix operator. Here's the definition of ++ from the prelude (http://www.haskell.org/onlinereport/standard-prelude.html):

  (++) :: [a] -> [a] -> [a]
  []     ++ ys = ys
  (x:xs) ++ ys = x : (xs ++ ys)

so [1, 2, 3] ++ [4, 5] = [1, 2, 3, 4, 5]