ios – “YearCalendarUnit”在OS X 10.10版中被弃用：使用NSCalendarUnitYear

我的代码：

let calendar = NSCalendar.currentCalendar()
 let dateComponents = calendar.components(NSCalendarUnit.YearCalendarUnit | NSCalendarUnit.MonthCalendarUnit | NSCalendarUnit.DayCalendarUnit,fromDate: self)

我的错误：

'YearCalendarUnit' was deprecated in OS X version 10.10: Use NSCalendarUnitYear instead
'MonthCalendarUnit' was deprecated in OS X version 10.10: Use NSCalendarUnitMonth instead
'DayCalendarUnit' was deprecated in OS X version 10.10: Use NSCalendarUnitDay instead

但我不能键入
NSCalendarUnitYear以及(NSCalendarUnitMonth / NSCalendarUnitDay)
哪里不对？

解决方法

使用let dateComponents = calendar.components(.CalendarUnitYear | .CalendarUnitMonth | .CalendarUnitDay,fromDate：self)

编辑：

这是因为错误消息是针对Objective-C的,不适用于swift.