title: What about iPod #define constants?
body: <p>When I try to define my constants here, I don't have any experiences about iPod:</p>
  
  <pre><code>#define isIPhone (![[UIDevice currentDevice] respondsToSelector:@selector(userInterfaceIdiom)] || [[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)
  </code></pre>
  
  <p>Can anyone know how to define the iPod models?</p>