I want to get hour, minitues, seconds from NSCalendar:
let calendar = NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian)
let units = NSCalendarUnit.Hour | NSCalendarUnit.Minute | NSCalendarUnit.Second
let components = calendar?.components(units, fromDate: NSDate())
var hours = components.hour
var min = components.minute
var sec = components.second
and
// This line is error, How to get the units ?
units = NSCalendarUnit.Hour | NSCalendarUnit.Minute | NSCalendarUnit.Second