objective c - NSMutableOrderedSet addObject not ordered -

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मेरे पास एक NSMutableOrderedSet जिसमें NSDate ऑब्जेक्ट हैं प्रारंभ में, यहां मान हैं: 

  2014-10-08 12:46:48 +0000 2014-10-08 12:46:42 +0000   < पी  addObject  को कॉल करने के बाद  2014-10-08 12:45:40 +0000 , मुझे निम्न आउटपुट मिलता है:  
  2014 -10-08 12:46:42 +0000 2014-10-08 12:46:48 +0000 2014-10-08 12:45:40 +0000   
 क्यों नहीं हैं वे आदेश दिए हैं?   
 
 
 एक  NSMutablOrderedSet  एक जावा  TreeSet जैसा नहीं है  जिसे सॉर्ट किया गया है।  addObject:  दस्तावेज़ीकरण देखें:  
 
 किसी ऑब्जेक्ट को म्यूटेट किए गए ऑर्डर सेट के अंत में जोड़ता है, अगर यह पहले से ही सदस्य नहीं है।    
 या  
   कोड> - (शून्य) सॉर्ट यूसिंग कॉम्पापेरेटर: (एनएससीसमपैर) सीएमपीटी

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