42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <tuple>
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// template <class... Types> class tuple;
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// template<class... Types>
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// tuple<VTypes...> make_tuple(Types&&... t);
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#include <tuple>
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#include <functional>
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#include <cassert>
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int main()
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{
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{
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int i = 0;
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float j = 0;
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std::tuple<int, int&, float&> t = std::make_tuple(1, std::ref(i),
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std::ref(j));
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assert(std::get<0>(t) == 1);
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assert(std::get<1>(t) == 0);
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assert(std::get<2>(t) == 0);
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i = 2;
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j = 3.5;
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assert(std::get<0>(t) == 1);
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assert(std::get<1>(t) == 2);
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assert(std::get<2>(t) == 3.5);
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std::get<1>(t) = 0;
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std::get<2>(t) = 0;
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assert(i == 0);
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assert(j == 0);
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}
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}
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