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// Copyright 2015 The Cobalt Authors. 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_