原文：https://stackoverflow.com/questions/28486347/cant-use-asioplaceholderserror-in-non-boost-version-of-asio

Can't use asio::placeholders::error in non-Boost version of Asio

  

   

    

     

    
    

     

      void handle_accept(const std::error_code&);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      acceptor.async_accept(server_socket, std::bind(&handle_accept,
     
    
   

    

     

    
    

     
  std::placeholders::_1 /* error_code */));
     
    
  
 

  

   

    

     

    
    

     

      #include <iostream>
     
    
   

    

     

    
    

     

      #include <functional>
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      #include <boost/asio.hpp>
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      void handle_accept(const boost::system::error_code& error_code)
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
  std::cout << "handle_accept: " << error_code.message() << std::endl;
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      void noop() {}
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      int main()
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     

        u
     
    
  
 

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原文链接：blog.csdn.net/jacke121/article/details/89417800