| /* |
| * Copyright 2015 Facebook, Inc. |
| * |
| * 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 FOLLY_BASE_CONTAINER_TRAITS_H_ |
| #define FOLLY_BASE_CONTAINER_TRAITS_H_ |
| |
| #include <folly/Traits.h> |
| |
| namespace folly { |
| |
| FOLLY_CREATE_HAS_MEMBER_FN_TRAITS(container_emplace_back_traits, emplace_back); |
| |
| template <class Container, typename... Args> |
| inline |
| typename std::enable_if< |
| container_emplace_back_traits<Container, void(Args...)>::value>::type |
| container_emplace_back_or_push_back(Container& container, Args&&... args) { |
| container.emplace_back(std::forward<Args>(args)...); |
| } |
| |
| template <class Container, typename... Args> |
| inline |
| typename std::enable_if< |
| !container_emplace_back_traits<Container, void(Args...)>::value>::type |
| container_emplace_back_or_push_back(Container& container, Args&&... args) { |
| using v = typename Container::value_type; |
| container.push_back(v(std::forward<Args>(args)...)); |
| } |
| |
| } |
| |
| #endif |
