blob: c48a73b2af173b513c49b850f4e6960bf7d67b24 [file] [log] [blame]
/*
* Copyright 2015 Google Inc. All Rights Reserved.
*
* 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 COBALT_BASE_ENABLE_IF_H_
#define COBALT_BASE_ENABLE_IF_H_
namespace base {
// These classes are used to implement std::enable_if, which is available
// only in C++11.
// See http://en.cppreference.com/w/cpp/types/enable_if for documentation.
template <bool B, class T = void>
struct enable_if {};
template <class T>
struct enable_if<true, T> {
typedef T type;
};
} // namespace base
#endif // COBALT_BASE_ENABLE_IF_H_