title: difference SAFE_RELEASE(), SAFE_DELETE()
body: <p>I'm newbie in programming.</p>
  
  <p>I'm wondering release and delete function.</p>
  
  <p>When I allocate memory with new, I should terminate it with delete.</p>
  
  <p>But when I should use release?</p>
  
  <p>What's the difference release and delete...?</p>