| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * 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. |
| */ |
| #ifndef ANDROID_HARDWARE_VIBRATOR_UTILS_H |
| #define ANDROID_HARDWARE_VIBRATOR_UTILS_H |
| |
| template <typename T> |
| class Is_Iterable { |
| private: |
| template <typename U> |
| static std::true_type test(typename U::iterator *u); |
| |
| template <typename U> |
| static std::false_type test(U *u); |
| |
| public: |
| static const bool value = decltype(test<T>(0))::value; |
| }; |
| |
| template <typename T, bool B> |
| using Enable_If_Iterable = std::enable_if_t<Is_Iterable<T>::value == B>; |
| |
| #endif // ANDROID_HARDWARE_VIBRATOR_UTILS_H |