1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <array> 11 12 // template <size_t I, class T, size_t N> T& get(array<T, N>& a); 13 14 #include <array> 15 #include <cassert> 16 17 #if __cplusplus > 201103L 18 struct S { 19 std::array<int, 3> a; 20 int k; 21 constexpr S() : a{1,2,3}, k(std::get<2>(a)) {} 22 }; 23 24 constexpr std::array<int, 2> getArr () { return { 3, 4 }; } 25 #endif 26 27 int main() 28 { 29 { 30 typedef double T; 31 typedef std::array<T, 3> C; 32 C c = {1, 2, 3.5}; 33 std::get<1>(c) = 5.5; 34 assert(c[0] == 1); 35 assert(c[1] == 5.5); 36 assert(c[2] == 3.5); 37 } 38 #if _LIBCPP_STD_VER > 11 39 { 40 typedef double T; 41 typedef std::array<T, 3> C; 42 constexpr C c = {1, 2, 3.5}; 43 static_assert(std::get<0>(c) == 1, ""); 44 static_assert(std::get<1>(c) == 2, ""); 45 static_assert(std::get<2>(c) == 3.5, ""); 46 } 47 { 48 static_assert(S().k == 3, ""); 49 static_assert(std::get<1>(getArr()) == 4, ""); 50 } 51 #endif 52 } 53
