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// type_index example
#include <iostream> // std::cout
#include <typeinfo> // operator typeid
#include <typeindex> // std::type_index
#include <unordered_map> // std::unordered_map
#include <string> // std::string
struct C {};
int main()
{
std::unordered_map<std::type_index,std::string> mytypes;
mytypes[typeid(int)]="Integer type";
mytypes[typeid(double)]="Floating-point type";
mytypes[typeid(C)]="Custom class named C";
std::cout << "int: " << mytypes[typeid(int)] << '\n';
std::cout << "double: " << mytypes[typeid(double)] << '\n';
std::cout << "C: " << mytypes[typeid(C)] << '\n';
return 0;
}
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