title: UITableView sections from JSON data
body: <p>I have JSON data like this:</p>
  
  <pre><code>[{"id":"3","name":"jason"},{"id":"4","name":"karen"}]
  </code></pre>
  
  <p>I want to build a table view with a section for each pair [id, name]. The section title should be the <em>id</em> value, the only cell for each section should be the <em>name</em> value. </p>
  
  <p>How can I parse the JSON data into an array and use [array count] in order to determine how many section have to be displayed?</p>
  
  <p>Thanks very much..</p>
  
  <p>forgive my bad English!</p>