NSMutableArray * arr = [NSMutableArray arrayWithCapacity:0];

NSDictionary * dic = [[NSDictionary alloc]init];
[arr addObject:dic];

dic = [[NSDictionary alloc]init];
[arr addObject:dic];

dic = [[NSDictionary alloc]init];
[arr addObject:dic];
[dic release];
[dic release];
   [dic release];


哪位知道以上代码错在哪，请给与解惑？

最后的三个release有问题，应该在改变指针指向时先release。如：

1. NSMutableArray * arr = [NSMutableArray arrayWithCapacity:0];
   
2. 
   
3. NSDictionary * dic = [[NSDictionary alloc]init];
   
4. [arr addObject:dic];
   
5. [dic release];
   
6. 
   
7. dic = [[NSDictionary alloc]init];
   
8. [arr addObject:dic];
   
9. [dic release];
   
10. 
    
11. dic = [[NSDictionary alloc]init];
    
12. [arr addObject:dic];
    
13. [dic release];
    

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