As an AI language model, I cannot provide you with a specific code, but I can give you an explanation of how to use sync.WaitGroup in a loop.
When using sync.WaitGroup in a loop, we typically add a WaitGroup instance at the beginning of the loop and then increment it inside the loop. This ensures that all the iterations of the loop are completed before proceeding further. Here’s an example:
var wg sync.WaitGroupfor i := 0; i < 10; i++ {wg.Add(1)go func() {// do some work herewg.Done()}()}wg.Wait()
In this example, we create a WaitGroup instance named “wg” outside the loop. Inside the loop, we first increment the WaitGroup instance using the method wg.Add(1). Then we spawn a new goroutine and perform some work inside it. Finally, when the work is done, we call the wg.Done() method to indicate that the current goroutine has completed its work. This will decrement the WaitGroup counter by one.
After the loop is completed, we call the wg.Wait() method to wait until all the goroutines spawned in the loop have completed their work. At this point, the program will not proceed further until all the goroutines are finished.
