OllieGreen OllieGreen - 5 months ago 11
Swift Question

Return multiple values from a function in swift

How do I return 3 separate data values of the same type(Int) from a function in swift?

I'm attempting to return the time of day, I need to return the Hour, Minute and Second as separate integers, but all in one go from the same function, is this possible?

I think I just don't understand the syntax for returning multiple values. This is the code I'm using, I'm having trouble with the last(return) line.

Any help would be greatly appreciated!

func getTime() -> Int
{
let date = NSDate()
let calendar = NSCalendar.currentCalendar()
let components = calendar.components(.CalendarUnitHour | .CalendarUnitMinute | .CalendarUnitSecond, fromDate: date)
let hour = components.hour
let minute = components.minute
let second = components.second
let times:String = ("\(hour):\(minute):\(second)")
return hour, minute, second
}

Answer

Return a tuple:

func getTime() -> (Int, Int, Int) {
    ...
    return ( hour, minute, second)
}

Then it's invoked as:

let (hour, minute, second) = getTime()

or:

let time = getTime()
println("hour: \(time.0)")