[objective-c] dispatch_after - GCD in Swift?

Another way is to extend Double like this:

extension Double {
   var dispatchTime: dispatch_time_t {
       get {
           return dispatch_time(DISPATCH_TIME_NOW,Int64(self * Double(NSEC_PER_SEC)))
       }
   }
}

Then you can use it like this:

dispatch_after(Double(2.0).dispatchTime, dispatch_get_main_queue(), { () -> Void in
            self.dismissViewControllerAnimated(true, completion: nil)
    })

I like matt's delay function but just out of preference I'd rather limit passing closures around.

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