types.h

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2024 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
#pragma once
 
#include <type_traits>
 
namespace aui {

    template<typename T, class = void>
    inline constexpr bool is_complete = false;

    template<typename T>
    inline constexpr bool is_complete<T, decltype(void(sizeof(T)))> = true;
 
 
 
    namespace impl {
        template<typename... Args>
        struct select_overload {
            template<typename R, typename C>
            constexpr auto operator()(R(C::*ptr)(Args...)) const noexcept -> decltype(ptr) {
                return ptr;
            }
        };
    }
    template<typename... Args>
    constexpr impl::select_overload<Args...> select_overload = {};
}

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