title: Enumerating array which contains a dictionary produces unexpected output
body: <p>My question is why does it output the last 4 lines in the log(see below)...those objects are part of the dictionary printed earlier in the log &amp; should not be located at the end of the array? I am missing something fundamental here... thx</p>
  
  <pre><code>NSDictionary *dictionary = [NSDictionary dictionaryWithObjectsAndKeys:
      [NSURL URLWithString: @"www.stanford.edu"], 
      @"Stanford University", 
      [NSURL URLWithString: @"www.apple.com"], 
      @"Apple shop", 
      [NSURL URLWithString: @"cs193p.stanford.edu"], 
      @"CS193P course", 
      [NSURL URLWithString: @"itunes.stanford.edu"], 
      @"Stanford on iTunes U", 
      [NSURL URLWithString: @"stanfordshop.com"], 
      @"Stanford Mall", 
      nil];
  
  NSMutableArray *myArray = [NSMutableArray arrayWithObjects:
      [NSString init],
      [NSURL URLWithString: @"www.stanford.edu"],
      [NSProcessInfo processInfo],
      dictionary,
      [@"Mutable string example" mutableCopy],
      [@"another mutable string" mutableCopy]];
  
  NSEnumerator *enumerator = [myArray objectEnumerator];
  id object;
  
  while ((object = [enumerator nextObject])) {
      NSLog([object description]);
  }
  </code></pre>
  
  <p>2009-07-02 09:35:12.756 WhatATool[6407:10b] NSString<br>
  2009-07-02 09:35:12.756 WhatATool[6407:10b] www.stanford.edu<br>
  2009-07-02 09:35:12.757 WhatATool[6407:10b] <code>&lt;NSProcessInfo: 0x107e20</code>><br>
  2009-07-02 09:35:12.758 WhatATool[6407:10b] {<br>
      "Apple shop" = www.apple.com;<br>
      "CS193P course" = cs193p.stanford.edu;<br>
      "Stanford Mall" = stanfordshop.com;<br>
      "Stanford University" = www.stanford.edu;<br>
      "Stanford on iTunes U" = itunes.stanford.edu;<br>
  }<br>
  2009-07-02 09:35:12.758 WhatATool[6407:10b] Mutable string example<br>
  2009-07-02 09:35:12.759 WhatATool[6407:10b] another mutable string<br>
  2009-07-02 09:35:12.760 WhatATool[6407:10b] itunes.stanford.edu<br>
  2009-07-02 09:35:12.760 WhatATool[6407:10b] Stanford on iTunes U<br>
  2009-07-02 09:35:12.761 WhatATool[6407:10b] stanfordshop.com<br>
  2009-07-02 09:35:12.762 WhatATool[6407:10b] Stanford Mall  </p>