Thoughts

1. Select v/s Range

2. sync.WaitGroup.

func handle(..) { wg.Add(1) ... wg.Done() }

func main() { wg := new(sync.WaitGroup) for i := 0; i < N; i++ { go handle(..) } wg.Wait() }

The above wouldn't work, because goroutines don't necessarily get scheduled immediately. So, wg.Add(1) wouldn't get called, which means wg.Wait() wouldn't block, and the program would finish execution before goroutines had a chance to be run.