how do you make a heterogeneous boost::map?

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旧巷少年郎 2020-11-30 00:15

I want to have a map that has a homogeneous key type but heterogeneous data types.

I want to be able to do something like (pseudo-code):

boost::map&l


      
      
        
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                   既然无缘
                                             
                
                
                (楼主)
            
              
              
                2020-11-30 00:27
              

            
            
                        
#include 
#include 
#include 
#include 

int main()
{
    try
    {
        std::map m;
        m["a"]  = 2;
        m["b"]  = static_cast("black sheep");

        int i = boost::any_cast(m["a"]);
        std::cout << "I(" << i << ")\n";

        int j = boost::any_cast(m["b"]); // throws exception
        std::cout << "J(" << j << ")\n";
    }
    catch(...)
    {
        std::cout << "Exception\n";
    }

}

    
             
                                                        
            
            
              
                
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