lambda2/test/stream_insert.cpp
2021-09-05 03:01:31 +03:00

39 lines
745 B
C++

// Copyright 2021 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/lambda2.hpp>
#include <boost/core/lightweight_test.hpp>
#include <sstream>
#include <string>
template<class T> std::string to_string_1( T const& t )
{
using namespace boost::lambda2;
std::ostringstream os;
( std::ref( os ) << _1 )( t );
return os.str();
}
template<class T> std::string to_string_2( T const& t )
{
using namespace boost::lambda2;
std::ostringstream os;
( os << _1 )( t );
return os.str();
}
int main()
{
BOOST_TEST_EQ( to_string_1( 123 ), "123" );
BOOST_TEST_EQ( to_string_2( 456 ), "456" );
return boost::report_errors();
}