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// Copyright (C) 2016-2018 T. Zachary Laine
//
// 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)
//[hello_world_redux
#include <boost/yap/algorithm.hpp>
#include <iostream>
template <boost::yap::expr_kind Kind, typename Tuple>
struct stream_expr
{
static const boost::yap::expr_kind kind = Kind;
Tuple elements;
template <typename T>
decltype(auto) operator<< (T && x)
{ return boost::yap::value(*this) << std::forward<T &&>(x); }
};
int main ()
{
auto cout = boost::yap::make_terminal<stream_expr>(std::cout);
cout << "Hello" << ',' << " world!\n";
return 0;
}
//]
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