title: what is diff. b/w @property (nonatomic,assign) and @property (nonatomic,retain)
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/5353163/are-propertynonatomicivar-propertynonatomic-assignivar-the-same-or-differen">Are @property(nonatomic)ivar @property(nonatomic,assign)ivar the same or different?</a>  </p>
  </blockquote>
  
  
  
  <p>i have seen in many classes that uses delegate which use this keyword assign instead of retain.</p>
  
  <p>y we have use assign instead retain.</p>
  
  <p>may i use assign to myclass ivar.</p>
  
  <p>if i did like that then what is the meaning of it?</p>