scala> def f(x:Int): Int => Int = { n:Int => x + n } f: (x: Int)(Int) => Int
当你调用这个函数时,你会得到一个新的函数.
scala> f(2) res1: (Int) => Int = <function1>
哪个可以称为正常功能:
scala> res1(3) res2: Int = 5