e356f681f6
Implement `std::expected` https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p0323r12.html Added tests Differential Revision: https://reviews.llvm.org/D124516 address comment
20 lines
797 B
C++
20 lines
797 B
C++
//===----------------------------------------------------------------------===//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
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// template<class E> unexpected(E) -> unexpected<E>;
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#include <concepts>
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#include <expected>
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struct Foo{};
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static_assert(std::same_as<decltype(std::unexpected(5)), std::unexpected<int>>);
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static_assert(std::same_as<decltype(std::unexpected(Foo{})), std::unexpected<Foo>>);
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static_assert(std::same_as<decltype(std::unexpected(std::unexpected<int>(5))), std::unexpected<int>>);
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