concurrent-map-wrong.go

concurrent-map-wrong.go

func getContentDetails(contentIds []int) {

	var wg sync.WaitGroup
	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) {
			
			defer wg.Done()

			content := service.GetContent(contentId)

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

		}(result, contentId, &wg)
	}

	wg.Wait()
}