gistfile1.go

func Mount() {
  mounter := ...
  errChan := make(chan error)
  go func() {
    if err := mounter.Mount(); err != nil {
      errChan <- err
    }
  }()
  readyChan := make(chan bool)
  go func() {
    mounter.Ready()
    close(readyChan)
  }()
  select {
  case err := <-errChan:
    return err
  case <-readyChan:
    return nil
  }
}

func Mount() (<-chan error, error) {
  mounter := ...
  errChan := make(chan error)
  readyChan := make(chan bool)
  go func() {
    if err := mounter.Mount(readyChan); err != nil {
      errChan <- err
    }
  }()
  select {
  case err := <-errChan:
    return nil, err
  case <-readyChan:
    return errChan, nil
  }
}