title: Copying NSDictionary to NSArray
body: <p>I have a variable declared as <code>NSDictionary</code>. How can I copy it to an <code>extern const NSArray</code> variable? For example:</p>
  
  <pre><code>NSMutableDictionary *selectedItem = [self.dataArray objectAtIndex:indexPath.row];
  [selectedItem setObject:[NSNumber numberWithBool:targetCustomCell.checked]     
                   forKey:@"checked"];
  </code></pre>