52 lines
1.0 KiB
C++
52 lines
1.0 KiB
C++
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// Copyright 2017 Peter Dimov.
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//
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// Distributed under the Boost Software License, Version 1.0.
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//
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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#include <boost/variant2/variant.hpp>
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using namespace boost::variant2;
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#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
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int main()
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{
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{
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constexpr variant<int> v;
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STATIC_ASSERT( v.index() == 0 );
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STATIC_ASSERT( get<0>(v) == 0 );
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}
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{
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constexpr variant<int const> v;
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STATIC_ASSERT( v.index() == 0 );
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STATIC_ASSERT( get<0>(v) == 0 );
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}
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{
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constexpr variant<int, float> v;
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STATIC_ASSERT( v.index() == 0 );
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STATIC_ASSERT( get<0>(v) == 0 );
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}
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{
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constexpr variant<int, int, float> v;
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STATIC_ASSERT( v.index() == 0 );
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STATIC_ASSERT( get<0>(v) == 0 );
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}
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{
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constexpr variant<int, float, float> v;
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STATIC_ASSERT( v.index() == 0 );
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STATIC_ASSERT( get<0>(v) == 0 );
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}
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}
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