title: Add and extract struct from NSMutableArray
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/4516991/whats-the-best-way-to-put-a-c-struct-in-an-nsarray">What’s the best way to put a c-struct in an NSArray?</a>  </p>
  </blockquote>
  
  
  
  <p>I need to create an array of structures, such as:</p>
  
  <pre><code>typedef struct
  {
      int fill;
      BOOL busy;
  } MapCellST;
  </code></pre>
  
  <p>How can I add instances of this structure in NSMutableArray and how I can extract copies of the structure and work with its properties later?</p>