相关疑难解决方法(0)

升级到xcode beta 6之后,编译突然在我身上爆炸.我没有得到任何类型的内联消息,只是在构建日志中出现此错误.

Undefined symbols for architecture i386:
  "__TFSs15_arrayForceCastU___FGSaQ__GSaQ0__", referenced from:
      __TFC9MyProj6NavBar5stackfS0_FCSo20CDVInvokedUrlCommandT_ in NavBar.o

我设法将其追溯到这行代码,这在beta 5上运行良好.

// A dictionary of String keys and arrays of NavBarItem instances as values.
var stacks: [String:[NavBarItem]] = [:]

func stack(cmd: CDVInvokedUrlCommand) {
    let stackName: String = cmd.arguments[0] as String

    if let stack = stacks[stackName] {

        // When I comment this line out I get a clean compile.
        navBar.setItems(stack, animated: false)

    }
}

我唯一的猜测是它不喜欢从快速阵列转换为NSArray某种方式.有任何想法吗？