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Common: Create Range Projections For std::pair

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This commit is contained in:
mitaclaw
2024-09-29 14:07:27 -07:00
parent 87496205aa
commit 1e5e9219cd
3 changed files with 32 additions and 0 deletions
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30
Source/Core/Common/Projection.h Normal file
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// Copyright 2025 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <utility>
namespace Common::Projection
{
struct First
{
// TODO C++23: static operator()
template <class T>
[[nodiscard]] constexpr auto&& operator()(T&& t) const noexcept
{
return std::forward<T>(t).first;
}
};
struct Second
{
// TODO C++23: static operator()
template <class T>
[[nodiscard]] constexpr auto&& operator()(T&& t) const noexcept
{
return std::forward<T>(t).second;
}
};
using Key = First;
using Value = Second;
} // namespace Common::Projection