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// Copyright 2017, 2020 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#if defined(_MSC_VER)
# pragma warning( disable: 4244 ) // conversion from float to int, possible loss of data
#endif
#include <boost/variant2/variant.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/config.hpp>
#include <boost/config/workaround.hpp>
#include <utility>
struct X: boost::variant2::variant<int, float>
{
#if BOOST_WORKAROUND( BOOST_MSVC, < 1940 )
template<class T> explicit X( T&& t ): variant( std::forward<T>( t ) ) {};
#else
using variant::variant;
#endif
};
template<class... T> struct Y: boost::variant2::variant<T...>
{
using boost::variant2::variant<T...>::variant;
};
int main()
{
{
X v1( 1 );
X const v2( 3.14f );
BOOST_TEST_EQ( (visit( []( int x1, float x2 ){ return (int)(x1 * 1000) + (int)(x2 * 100); }, v1, v2 )), 1314 );
visit( []( int x1, float x2 ){ BOOST_TEST_EQ( x1, 1 ); BOOST_TEST_EQ( x2, 3.14f ); }, v1, v2 );
visit( []( int x1, float x2 ){ BOOST_TEST_EQ( x1, 1 ); BOOST_TEST_EQ( x2, 3.14f ); }, std::move(v1), std::move(v2) );
}
{
Y<int, float> v1( 1 );
Y<int, float> const v2( 3.14f );
BOOST_TEST_EQ( (visit( []( int x1, float x2 ){ return (int)(x1 * 1000) + (int)(x2 * 100); }, v1, v2 )), 1314 );
visit( []( int x1, float x2 ){ BOOST_TEST_EQ( x1, 1 ); BOOST_TEST_EQ( x2, 3.14f ); }, v1, v2 );
visit( []( int x1, float x2 ){ BOOST_TEST_EQ( x1, 1 ); BOOST_TEST_EQ( x2, 3.14f ); }, std::move(v1), std::move(v2) );
}
return boost::report_errors();
}
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