title: What's the difference between 'atomic' and non-atomic?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/588866/atomic-vs-nonatomic-properties">Atomic vs nonatomic properties</a>  </p>
  </blockquote>
  
  
  
  <p>I just want to know what is the differneve between theses two lines of code :</p>
  
  <pre><code>@property(nonatomic, retain) NSString *str;
  </code></pre>
  
  <p>and</p>
  
  <pre><code>@property(atomic, retain) NSString *str;
  </code></pre>
  
  <p>Thanx,
  Regards,
  tek3</p>