Protobuf 에서 RepeatedPtrField 사용 주의

다음으로 이동:http://xiongchao.wordpress.com/2012/04/09/protobuf%E4%B8%ADrepeatedptrfield%E4%BD%BF%E7%94%A8%E6%B3%A8%E6%84%8F/

Protobuf RepeatedPtrField      vector   
           ，   push_back       operator =，
  protobuf2.3 ， operator =  RepeatedPtrField  private 。

  
  
  
  

   
   
   
   
 
    
 
     
 
      
 
       
 
        
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vector<RepeatedPtrField<T> > vec;      // ok
 
       
 
      
 
     
 
    
 
    
 
     
 
      
 
       
 
        
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RepeatedPtrField<T> t;                 // ok
 
       
 
      
 
     
 
    
 
    
 
     
 
      
 
       
 
        
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vec.push_back(t);                      // error
 
       
 
      
 
     
 
    
 
   
  
  
  
  

          ，         。

  
  
  
  

   
   
   
   
 
    
 
     
 
      
 
       
 
        
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vector<RepeatedPtrField<T>*> vec;
 
       
 
      
 
     
 
    
 
    
 
     
 
      
 
       
 
        
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RepeatedPtrField<T>* t;
 
       
 
      
 
     
 
    
 
    
 
     
 
      
 
       
 
        
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//    mutable_keys()，mutable        ，       
 
       
 
      
 
     
 
    
 
    
 
     
 
      
 
       
 
        
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t = const_cast<RepeatedPtrField<T>*>(something.keys());  
 
       
 
      
 
     
 
    
 
    
 
     
 
      
 
       
 
        
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vec.push_back(t);