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[英]Swift The compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions
[英]The compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions
我是Ios编程的新手,以下表示给出了错误:
let combine = date.enumerated().map {index, date in
return (date,self.arrFriendId[index],self.arrFriendName[index],self.arrFriendImage[index],self.arrMsgType[index],self.arrMessage[index], self.arrLastMsgTime[index], self.arrNotifyStatus[index])}
请帮助我解决这个问题。 提前致谢
当单个表达式执行大量操作时,通常会发生此错误。 因此,编译器告诉您将其分解为子表达式。
假设您想要Array<Any>
类型的输出combine
,可以这样进行:
let combine = date.enumerated().map { index, date -> Any in
let id = self.arrFriendId[index]
let name = self.arrFriendName[index]
let image = self.arrFriendImage[index]
let messageType = self.arrMsgType[index]
let message = self.arrMessage[index]
let messageTime = self.arrLastMsgTime[index]
let status = self.arrNotifyStatus[index]
return (date, id, name, image, messageType, message, messageTime, status)
}
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