Function test_examples

example/quick_examples.cpp:16–167

boost-no-inspect

// boost-no-inspect
void test_examples() {

#if BOOST_PFR_USE_CPP17
  {
//[pfr_quick_examples_ops
    // Assert equality.
    // Note that the equality operator for structure is not defined.

    struct test {
        std::string f1;
        std::string_view f2;
    };

    assert(
        boost::pfr::eq(test{"aaa", "zomg"}, test{"aaa", "zomg"})
    );
//]
  }
#endif

  {
//[pfr_quick_examples_for_each
    // Increment each field of the variable on 1 and
    // output the content of the variable.

    struct test {
        int f1;
        long f2;
    };

    test var{42, 43};

    boost::pfr::for_each_field(var, [](auto& field) {
        field += 1;
    });

    // Outputs: {43, 44}
    std::cout << boost::pfr::io(var);
//]
  }

  {
//[pfr_quick_examples_for_each_idx
    // Iterate over fields of a variable and output index and
    // type of a variable.

    struct tag0{};
    struct tag1{};
    struct sample {
        tag0 a;
        tag1 b;
    };

    // Outputs:
    //  0: tag0
    //  1: tag1
    boost::pfr::for_each_field(sample{}, [](const auto& field, std::size_t idx) {
        std::cout << '\n' << idx << ": "