template_util.h revision 3345a6884c488ff3a535c2c9acdd33d74b37e311 
1// Copyright (c) 2010 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef BASE_TEMPLATE_UTIL_H_
6#define BASE_TEMPLATE_UTIL_H_
7#pragma once
8
9namespace base {
10
11// template definitions from tr1
12
13template<class T, T v>
14struct integral_constant {
15  static const T value = v;
16  typedef T value_type;
17  typedef integral_constant<T, v> type;
18};
19
20template <class T, T v> const T integral_constant<T, v>::value;
21
22typedef integral_constant<bool, true> true_type;
23typedef integral_constant<bool, false> false_type;
24
25template <class T> struct is_pointer : false_type {};
26template <class T> struct is_pointer<T*> : true_type {};
27
28}  // namespace base
29
30#endif  // BASE_TEMPLATE_UTIL_H_
31