suyu/src/common/hash.h
Lioncash df72480395 common: Make use of [[nodiscard]] where applicable
Now that clang-format makes [[nodiscard]] attributes format sensibly, we
can apply them to several functions within the common library to allow
the compiler to complain about any misuses of the functions.
2020-08-15 17:17:52 -04:00

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// Copyright 2015 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include <utility>
#include <boost/functional/hash.hpp>
namespace Common {
struct PairHash {
template <class T1, class T2>
std::size_t operator()(const std::pair<T1, T2>& pair) const noexcept {
std::size_t seed = std::hash<T1>()(pair.first);
boost::hash_combine(seed, std::hash<T2>()(pair.second));
return seed;
}
};
} // namespace Common