substack-concurrency-5.go

// BAD
var wg sync.WaitGroup
for _, salutation := range []string{"hello", "greetings", "good day"} {
    wg.Add(1)
    go func() {
        defer wg.Done()
        fmt.Println(salutation)
    }()
}
wg.Wait()

// good day
// good day
// good day