我尝试将Double类型变量operand
附加到AnyObject数组中。
private var internalProgram = [AnyObject]()
internalProgram.append(operand)
但是,显示Argument type 'Double' does not conform to expected type 'AnyObject'
。我必须将operand
转换为AnyObject
吗?
答案 0 :(得分:0)
let numberOperand = NSNumber(double: operand)
yourArrayOfAnyObject.append(numberOperand)