title: Which is more efficient way? StoryBoard or XIB?
body: <p>My question is slightly different then my title suggest.
  I have worked with xib. Now i am trying to work with storyboard.
  My question is if we are navigate through one class from another class, is StoryBoard giving benefit for better memory management.
  Suppose we have 2 ViewControllers: ViewControllerA and ViewControllerB.
  We are trying to go through ViewControllerA --> ViewControllerB.
  Now, in Xib our approach is below;</p>
  
  <pre><code>ViewControllerB *VCB = [ [ViewControllerB alloc] init];
  [self.navigationController pushViewController: VCB Animated: YES];
  </code></pre>
  
  <p>Where in Story Board,</p>
  
  <pre><code>-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
  {
      if ([segue.identifier isEqualToString:@"Second"])
      {
          SecondViewController *objSecond = (SecondViewController*)[segue destinationViewController];
  
      }
  }
  </code></pre>
  
  <p>And Do,</p>
  
  <pre><code>[self performSegueWithIdentifier:@"Second" sender:self];
  </code></pre>
  
  <p>So, My question is We alloc our class in Xib, Where in storyBoard we aren't.
  So is there any memory allocation advantages in storyboard?</p>