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src/optional.h
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// Copyright (c) 2017 The Bitcoin Core developers | |||||
// Distributed under the MIT software license, see the accompanying | |||||
// file COPYING or http://www.opensource.org/licenses/mit-license.php. | |||||
#ifndef BITCOIN_OPTIONAL_H | |||||
#define BITCOIN_OPTIONAL_H | |||||
#include <boost/optional.hpp> | |||||
//! Substitute for C++17 std::optional | |||||
template <typename T> using Optional = boost::optional<T>; | |||||
//! Substitute for C++17 std::nullopt | |||||
static auto &nullopt = boost::none; | |||||
#endif // BITCOIN_OPTIONAL_H |