C++ return type overload hack

Question

I was bored and came up with such hack (pseudocode):

 1 struct proxy {
 2     operator int(); // int function
 3     operator double(); // double function
 4             


        

Answer 1

Actually it seems you have reinvented a Variant type. Just take a look at all *variant types that are present in many frameworks, eg.: MS uses VARIANT, Qt has QVariant.