title: iOS PFObject iterate to get all key/value pairs
body: <p>I have an array of PFObjects called "customers" that has 15 value/keys pairs in it.  I want to use these key/pair values at run time.  How can I iterate through each pair and assign the value to NSString?</p>
  
  <p>Below I have a snippet that works but I have to enter the key at design time, which means if I ever change anything I have to update code.  I don't want that.  I need to loop each key/value pair at run time.</p>
  
  <pre><code>for (PFObject customer in customers) {
      NSString *str = [customer valueForKey:@"key"];
  }
  </code></pre>
  
  <p>Thanks</p>