Modernes C++ programmieren

//#(compile) c++; compiler:g132; options:-O3 -std=c++23; libs:-
// https://godbolt.org/z/1eco9Wcr3 
#include <any>
#include <iostream>
#include <vector>
#include <string>
int main() {
    std::any a = 5;
    std::cout << std::any_cast<int>(a) << '\n';
    a = 3.456;
    std::cout << std::any_cast<double>(a) << '\n';
    using namespace std::literals;
    std::vector<std::any> data { 4, 8.976, "Geronimo"s };
    std::cout << std::any_cast<double>( data[1] ) << '\n';
    std::cout << data[1].type().name()  << '\n';
}