swift operator+()

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class mypoint{

   var x:Int =1;

   var y:Int =1;

   init(#x:Int,#y:Int){

       self.x = x;

       self.y = y;

    }

   var description:String{//在这里稍有贪心，做一描述成员get变量

       get{

           return "x=\(x),y=\(y)";

        }

    }

}

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

   return mypoint(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);

swift operator+()

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原文地址：http://blog.csdn.net/crazyeveryday/article/details/46582365