我正在使用以下XML，天气传感器结构。近期目标是对该结构进行排序，首先按传感器位置，然后按读取标签。我是一个苦苦挣扎的XML处理新手!!!House-FrontEntryTemperature57F05/28/201309:49PMToday6456Week7246Month7946Year8041Alltime8041House-FrontEntryHumidity83%05/28/201309:49PMToday8358Week8342Month9931Year9931Alltime9931House-PatioTemperature53F05/28/201309:48PMToda

我希望实现某种风格的枚举语法/功能，但我不确定如何实现它。目前我有以下内容:internalenumTimeframe:Equatable{//MARK:-Casescasehour(count:Int)caseday(count:Int)caseweek(count:Int)casemonth(count:Int)caseyear(count:Int)caseallcaseexact(date:Date)caseunspecified}除非需要，否则我想消除计数关联值。例如:letoneDayTimeframe:Timeframe=.daylettwoDayTimeframe:Tim