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Implement N3672, optional<T>.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@189772 91177308-0d34-0410-b5e6-96231b3b80d8
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Howard Hinnant
2013-09-02 20:30:37 +00:00
parent c64c980140
commit 01afa5c6e4
65 changed files with 4535 additions and 4 deletions
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42
test/utilities/optional/optional.comp_with_t/equal.pass.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <optional>
// template <class T> constexpr bool operator==(const optional<T>& x, const T& v);
// template <class T> constexpr bool operator==(const T& v, const optional<T>& x);
#include <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef int T;
typedef std::optional<T> O;
constexpr T val(2);
constexpr O o1; // disengaged
constexpr O o2{1}; // engaged
constexpr O o3{val}; // engaged
static_assert ( !(o1 == 1), "" );
static_assert ( o2 == 1, "" );
static_assert ( !(o3 == 1), "" );
static_assert ( o3 == 2 , "" );
static_assert ( o3 == val, "" );
static_assert ( !(1 == o1), "" );
static_assert ( 1 == o2, "" );
static_assert ( !(1 == o3), "" );
static_assert ( 2 == o3 , "" );
static_assert ( val == o3 , "" );
}
#endif
}