Swift 无法为类型为'；[字符串]'；

我在if语句中收到错误消息

if (SelectedJobFunctions.contains(JobFunctions[indexPath.row])){
            cell.accessoryType = .Checkmark
        }
        else {
            cell.accessoryType = .None
        }

这是数组

var JobFunctions = ["Cleaning","Admin","Slacking","Business"]
var SelectedJobFunctions = [] 

---

我正在尝试查看用户是否选择了一个函数，如果它已被选中，并且将在

SelectedJobFunctions

数组中，它将添加一个复选标记尝试在SelectedJobFunctions中指定数组的类型，如下所示

   var JobFunctions = ["Cleaning","Admin","Slacking","Business"]
   var SelectedJobFunctions:[String] = []
   if (SelectedJobFunctions.contains(JobFunctions[indexPath.row])){
               cell.accessoryType = .Checkmark
   }
   else {
              cell.accessoryType = .None
   }