boost/libs/pfr/test/run/motivating_example2.cpp
2021-10-05 21:37:46 +02:00

22 lines
591 B
C++

// Copyright (c) 2016-2021 Antony Polukhin
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#include <iostream>
#include "boost/pfr.hpp"
struct my_struct { // no ostream operator defined!
std::string s;
int i;
};
int main() {
my_struct s{{"Das ist fantastisch!"}, 100};
std::cout << "my_struct has "
<< boost::pfr::tuple_size<my_struct>::value // Outputs: 2
<< " fields: "
<< boost::pfr::io(s); // Outputs: {"Das ist fantastisch!", 100};
}