Example
Channels are often used to implement timeouts.
func main() {
// Create a buffered channel to prevent a goroutine leak. The buffer
// ensures that the goroutine below can eventually terminate, even if
// the timeout is met. Without the buffer, the send on the channel
// blocks forever, waiting for a read that will never happen, and the
// goroutine is leaked.
ch := make(chan struct{}, 1)
go func() {
time.Sleep(10 * time.Second)
ch <- struct{}{}
}()
select {
case <-ch:
// Work completed before timeout.
case <-time.After(1 * time.Second):
// Work was not completed after 1 second.
}
}
