Using WaitGroup to Track Work Items, Not Workers: A Multi-threaded BFS Example

WaitGroup and channels are two powerful primitives in Go for synchronizing goroutines. A common pattern uses a WaitGroup to wait for goroutines completion: 1wg.Add(1) 2go func() { 3 defer wg.Done() 4 for { 5 select { 6 case <- done: 7 return 8 case task <- tasks: 9 handle(task) 10 } 11 } 12}() 13wg.Wait() In this post, we'll explore an interesting use of WaitGroup and channels where the WaitGroup…