// Copyright (c) 2011 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef BASE_TEMPLATE_UTIL_H_ #define BASE_TEMPLATE_UTIL_H_ #include <cstddef> // For size_t. namespace base { template<class T, T v> struct integral_constant { static const T value = v; typedef T value_type; typedef integral_constant<T, v> type; }; typedef integral_constant<bool, true> true_type; typedef integral_constant<bool, false> false_type; template <class T, class U> struct is_same : public false_type {}; template <class T> struct is_same<T,T> : true_type {}; template<bool B, class T = void> struct enable_if {}; template<class T> struct enable_if<true, T> { typedef T type; }; } // namespace base #endif // BASE_TEMPLATE_UTIL_H_