56 lines
1.4 KiB
C++
56 lines
1.4 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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// <utility>
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// template <class T1, class T2> struct pair
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// struct piecewise_construct_t { };
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// constexpr piecewise_construct_t piecewise_construct = piecewise_construct_t();
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#include <utility>
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#include <tuple>
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#include <cassert>
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class A
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{
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int i_;
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char c_;
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public:
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A(int i, char c) : i_(i), c_(c) {}
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int get_i() const {return i_;}
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char get_c() const {return c_;}
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};
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class B
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{
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double d_;
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unsigned u1_;
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unsigned u2_;
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public:
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B(double d, unsigned u1, unsigned u2) : d_(d), u1_(u1), u2_(u2) {}
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double get_d() const {return d_;}
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unsigned get_u1() const {return u1_;}
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unsigned get_u2() const {return u2_;}
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};
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int main()
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{
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#ifndef _LIBCPP_HAS_NO_VARIADICS
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std::pair<A, B> p(std::piecewise_construct,
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std::make_tuple(4, 'a'),
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std::make_tuple(3.5, 6u, 2u));
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assert(p.first.get_i() == 4);
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assert(p.first.get_c() == 'a');
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assert(p.second.get_d() == 3.5);
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assert(p.second.get_u1() == 6u);
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assert(p.second.get_u2() == 2u);
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#endif
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}
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