ceph/src/boost/libs/pfr/test/run/tuple_size.cpp

   1 // Copyright (c) 2016-2022 Antony Polukhin
   2 //
   3 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #include <boost/pfr/core.hpp>
   7
   8 int main() {
   9     struct nested { int i; char data[20]; };
  10     struct foo { int i; char c; nested n; };
  11     static_assert(boost::pfr::tuple_size_v<foo> == 3, "");
  12
  13     struct with_reference { int& i; char data; };
  14     static_assert(boost::pfr::tuple_size_v<with_reference> == 2, "");
  15
  16     struct empty {};
  17     static_assert(boost::pfr::tuple_size_v<empty> == 0, "");
  18 }
  19