scala基础28-柯里化

/**
  * 柯里化: Curring,讲接收多个参数的函数,变成接收单一参数的函数
  * 用途:参数推导
  */
object Test extends App{
  def multiple(x: Int, y: Int) = x * y
  def multipleOne(x: Int) = (y: Int) => x * y

  /**
    * 1、返回函数(y: Int) => 6 * y
    * 2、向返回的函数传递7,即 6 * 7
    */
  println(multipleOne(6)(7))

  //也可以这样写,这种方式比较常用!!!
  def curring(x: Int)(y: Int) = x * y
  println(curring(10)(10))

  val a = Array("Hello", "Spark")
  val b = Array("hello", "spark")
  //第一个_是a,第二个_自动推导出是b
  println(a.corresponds(b) (_.equalsIgnoreCase(_)))
}