To add to what others have said, this code seems a little odd to me. Your
function f is called synchronously within the loop so there's no need to
use a WaitGroup or send on a done channel - when it returns you know that
it's done.
Your code would work fine without using the done channel or the waitgroup
at all.
Also your for loop in f would usually be written as the equivalent "for i
:= range ints".
On 1 Sep 2016 19:04, "Darren Hoo" <darren....@gmail.com> wrote:
> var wg sync.WaitGroup
>
> ints := make(chan int, 1)
> done := make(chan bool)
>
> go func() {
> for i := 0; i < 3; i++ {
> ints <- i
> }
> close(ints)
> }()
>
> f := func() {
> wg.Add(1)
> defer wg.Done()
>
> for {
> i, ok := <-ints
> if !ok {
> done <- true
> return
> }
> }
> }
>
> exit:
> for {
> select {
> case <-done:
> break exit
> default:
> f()
> }
> }
> wg.Wait()
>
>
>
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