GDC Demo

GDC

var group = dispatch_group_create()
        var queue = dispatch_queue_create("me.tutuge.test.gcd", DISPATCH_QUEUE_CONCURRENT);
        
        dispatch_group_async(group, queue, { () -> Void in
            
            NSThread.sleepForTimeInterval(10)
            println("First block done...")
        })
        dispatch_group_async(group, queue, { () -> Void in
            
            NSThread.sleepForTimeInterval(5)
            println("Second block done...")
        })
        
        
        dispatch_group_notify(group, queue) { () -> Void in
            
            println("All Task Finish")
        }