swift operator+()，swiftoperator

swift operator+()，swiftoperator

class mypoint{

   var x:Int =1;

   var y:Int =1;

   init(#x:Int,#y:Int){

       self.x = x;

       self.y = y;

    }

   var description:String{//在這裡稍有貪心，做一描述成員get變數

       get{

           return"x=\(x),y=\(y)";

        }

    }

}

func +(left:mypoint,right:mypoint)->mypoint{

   returnmypoint(x: left.x+right.x,y: left.y+right.y);

}

var p1:mypoint =mypoint(x:1, y:1);

var p2:mypoint =mypoint(x:2, y:2);

println((p1+p2).description);