ios - 'YearCalendarUnit' 在 OS X 版本 10.10 : Use NSCalendarUnitYear instead 中被弃用

Question

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

但是我不会打字NSCalendarUnitYear 以及 (NSCalendarUnitMonth/NSCalendarUnitDay)怎么了？

Answer 1

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。

编辑 2:请参阅 Will 对 Swift 2 及以后的评论。