Multiple workers in go

workers.go

wg := new(sync.WaitGroup)

for i := 0; i < workers; i++ {
       wg.Add(1)
       go func() {
               defer wg.Done()
               for {
                    select {
                    case input, open := <-In:
                       if !open { return }
                       v, e := f(input)
                       Out <- Result{v, e}
                    case <-quit:
                       return
                    }
               }
       }()
}

work <- blah
...
close(work)
wg.Wait()