ceph/src/boost/libs/callable_traits/example/has_varargs.cpp

   1 /*<-
   2 Copyright (c) 2016 Barrett Adair
   3
   4 Distributed under the Boost Software License, Version 1.0.
   5 (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
   6 ->*/
   7
   8 #ifdef BOOST_CLBL_TRTS_MSVC
   9 // MSVC requires __cdecl for varargs, and I don't want to clutter the example
  10 int main(){}
  11 #else
  12
  13 //[ has_varargs
  14 #include <type_traits>
  15 #include <boost/callable_traits/has_varargs.hpp>
  16
  17 namespace ct = boost::callable_traits;
  18
  19 static_assert(ct::has_varargs<int(...)>::value, "");
  20 static_assert(!ct::has_varargs<int()>::value, "");
  21
  22 int main() {}
  23 //]
  24 #endif