let totalPrice: Double = price * value
var money: Double = 0
for totalPrice in dataArray {
money = money + totalPrice
}
无法分配二进制运算符“ +”
最佳答案
如何声明“ dataArray”?
是[AnyObject]还是[Double]
如果是前者,则需要使用:
guard let price = totalPrice as? Double else { continue }
money = money + totalPrice