NSTimer run every minute but on first second

ios, objective-c, swift

Solution

One way would be to figure out the current next minute using an NSCalendar and schedule the timer to start from that, manually scheduling on the runLoop

let date = NSDate()
let calendar = NSCalendar.currentCalendar()
let components = calendar.components(NSCalendarUnit.CalendarUnitEra|NSCalendarUnit.CalendarUnitYear|NSCalendarUnit.CalendarUnitMonth|NSCalendarUnit.CalendarUnitDay|NSCalendarUnit.CalendarUnitHour|NSCalendarUnit.CalendarUnitMinute, fromDate: date)
components.minute += 1
components.second = 1
let nextMinuteDate = calendar.dateFromComponents(components)
let timer = NSTimer(fireDate: nextMinuteDate!, interval: 60, target: self, selector: Selector("everyMinute"), userInfo: nil, repeats: true)
NSRunLoop.mainRunLoop().addTimer(timer, forMode: NSDefaultRunLoopMode)

Problem

I have experience with NSTimer to run it once per minute, like ``` NSTimer.scheduledTimerWithTimeInterval(60.0, target: self, selector: Selector("everyMinute"), userInfo: nil, repeats: true) ``` Is it possible to use NSTimer, some other class, or some other control, to run some method every minute but on first second of minute ? I do have some idea how to implement it on my own, but I am first checking is this already exist ?

Original source