concurrent-map-right.go

concurrent-map-right.go

func getContentDetails(contentIds []int) {

	var wg sync.WaitGroup
	var mutex sync.Mutex
	var result = make(map[int][]Content, len(contentIds))

	wg.Add(len(contentIds))

	for _, contentId := range contentIds {
		go func(result map[int][]Content, contentId int,
			wg *sync.WaitGroup, mutex *sync.Mutex) {
			
			defer wg.Done()

			content := service.GetContent(contentId)

			mutex.Lock()
			result[contentId] = content
			mutex.Unlock()
			
          		fmt.Println("Done!")

		}(result, contentId, &wg, &mutex)
	}

	wg.Wait()
}