Monday, November 9, 2009

Using objects as functions

A fun but easily overlooked fact is that many classes inherit from a Function class and therefore can be used where "normal" functions can be used.
  1. scala> List(1,2) map (Map(1->"one",2->"two"))
  2. res0: List[java.lang.String] = List(one, two)
  3. scala> List(3,3,2) map (List('a''b''c','d'))
  4. res2: List[Char] = List(d, d, c)

1 comment:

  1. Nice trick. This works for Array and Set as well.
    Nice blog btw!