title: Objective-C alternative to C struct?
body: <p>In the Mac Developer Library section "Transitioning to ARC Release Notes" it states "…rather than use a struct, you can create an Objective-C class to manage the data instead" but doesn't elaborate further.</p>
  
  <p>Any suggestions on an Objective-C object that would be a reasonable alternative? I have the following C struct that I'm using for state values that I need to store when my app quits and restore when run again:</p>
  
  <pre><code>struct app_data
  {
      bool enable_flag;
      bool random_flag;
      …
      int wait_slider_value;
  };
  </code></pre>