Question

Can I use multiple parameters in setters?

For example:

private var _a = 0
def a = _a
def a_= (b: Int, c: Int) = _a = b + c

If yes, how can I call the setter method?

Answer 1

What about a tuple?

class A {
  private var _a = 0
  def a = _a
  def a_= (t: (Int, Int)) {
    _a = t._1 + t._2
  }
}

If you don’t like awkward tuple access syntax:

class A {
  private var _a = 0
  def a = _a
  def a_= (t: (Int, Int)) {
    t match {
      case(b, c) => _a = b + c
    }
  }
}

Usage:

val x = new A()
x.a = (3, 7)
x.a  //10