4684ddb6aa
- import libcxx - reduce targets to the one when compiled as a tools Change-Id: Iabb8427f80ff8e89463559a28bcb8b4f2bdbc496
58 lines
1.7 KiB
C++
58 lines
1.7 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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#include <tuple>
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#include <string>
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#include <complex>
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#include <cassert>
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int main()
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{
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#if _LIBCPP_STD_VER > 11
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typedef std::complex<float> cf;
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{
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auto t1 = std::tuple<int, std::string, cf> { 42, "Hi", { 1,2 }};
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assert ( std::get<int>(t1) == 42 ); // find at the beginning
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assert ( std::get<std::string>(t1) == "Hi" ); // find in the middle
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assert ( std::get<cf>(t1).real() == 1 ); // find at the end
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assert ( std::get<cf>(t1).imag() == 2 );
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}
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{
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auto t2 = std::tuple<int, std::string, int, cf> { 42, "Hi", 23, { 1,2 }};
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// get<int> would fail!
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assert ( std::get<std::string>(t2) == "Hi" );
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assert (( std::get<cf>(t2) == cf{ 1,2 } ));
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}
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{
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constexpr std::tuple<int, const int, double, double> p5 { 1, 2, 3.4, 5.6 };
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static_assert ( std::get<int>(p5) == 1, "" );
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static_assert ( std::get<const int>(p5) == 2, "" );
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}
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{
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const std::tuple<int, const int, double, double> p5 { 1, 2, 3.4, 5.6 };
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const int &i1 = std::get<int>(p5);
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const int &i2 = std::get<const int>(p5);
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assert ( i1 == 1 );
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assert ( i2 == 2 );
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}
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{
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typedef std::unique_ptr<int> upint;
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std::tuple<upint> t(upint(new int(4)));
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upint p = std::get<upint>(std::move(t)); // get rvalue
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assert(*p == 4);
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assert(std::get<0>(t) == nullptr); // has been moved from
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}
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#endif
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}
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