function_traits.h

Go to the documentation of this file.

/* * NRP Core - Backend infrastructure to synchronize simulations
 *
 * Copyright 2020-2023 NRP Team
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * This project has received funding from the European Union’s Horizon 2020
 * Framework Programme for Research and Innovation under the Specific Grant
 * Agreement No. 945539 (Human Brain Project SGA3).
 */
 
#ifndef FUNCTION_TRAITS_H
#define FUNCTION_TRAITS_H
 
#include <functional>
 
template<typename T>
struct function_traits;
 
template<typename R, typename ...Args>
struct function_traits<std::function<R(Args...)> >
{
    static const size_t nargs = sizeof...(Args);
 
    using result_t = R;
 
    template<size_t i>
    using arg_t = typename std::tuple_element<i, std::tuple<Args...>>::type;
};
 
#endif // FUNCTION_TRAITS