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20 lines
583 B
C++
20 lines
583 B
C++
// Copyright (c) 2017-2019 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_OPTIONAL_H
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#define BITCOIN_OPTIONAL_H
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#include <optional>
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#include <utility>
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//! Substitute for C++17 std::optional
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//! DEPRECATED use std::optional in new code.
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template <typename T>
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using Optional = std::optional<T>;
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//! Substitute for C++17 std::nullopt
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//! DEPRECATED use std::nullopt in new code.
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static auto& nullopt = std::nullopt;
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#endif // BITCOIN_OPTIONAL_H
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