Sobes.tech
Junior — Middle

Did you use the synchronization mechanism waitgroup in your implementation of your program?

sobes.tech AI

Answer from AI

Yes, in Go, the sync.WaitGroup mechanism is often used for synchronizing multiple goroutines. It allows the main goroutine to wait for a set of parallel tasks to complete.

Example of usage:

var wg sync.WaitGroup

wg.Add(3) // expecting 3 goroutines

for i := 0; i < 3; i++ {
    go func(id int) {
        defer wg.Done() // signal completion
        fmt.Printf("Goroutine %d is running\n", id)
        // some work
    }(i)
}

wg.Wait() // wait until all Done are called
fmt.Println("All goroutines are finished")

Thus, WaitGroup helps to manage concurrency correctly and ensures that the program does not terminate prematurely.