title: Xcode 4 warning "Expression result unused” for NSURLConnection
body: <p>I'm just trying to do my usual data transfert. I define my NSMutableURLRequest then call</p>
  
  <p><code>[[NSURLConnection alloc] initWithRequest:request delegate:self];</code></p>
  
  <p>This used to be ok with Xcode 3 but Xcode 4 warns me about "<em>Expression result unused</em>" on that line.
  The request does work but I would like to find a way to get rid of the warning.</p>
  
  <p>I suppose I could store the connection in a variable but I don't really need it and I can't see the point of setting it to <code>nil</code> the next line (although this would remove the warning)</p>
  
  <p>Please note: I'm not 100% sure if it's Xcode 4 or the fact ARC is enabled.</p>