Function SlowFunction

ch04/future.go:52–68

(ctx context.Context)

}

func SlowFunction(ctx context.Context) Future {
	resCh := make(chan string)
	errCh := make(chan error)

	go func() {
		select {
		case <-time.After(time.Second * 2):
			resCh <- "I slept for 2 seconds"
			errCh <- nil
		case <-ctx.Done():
			resCh <- ""
			errCh <- ctx.Err()
		}
	}()

	return &InnerFuture{resCh: resCh, errCh: errCh}
}